feat: support creation of Bitcoin testnet accounts

[ccharly]

Description

Adds support of testnet account within the extension following the same pattern than for mainnet accounts with a feature flag.

Related issues

Fixes: https://github.com/MetaMask/accounts-planning/issues/511

Manual testing steps

1. Run yarn start:flask
2. Go to the experimental settings tab
3. Enable the "Bitcoin testnet support" toggle
4. Click on the account menu list (on top)
5. You should now see a "Add a new Bitcoin account (Testnet)"
6. Click this button and follow the flow
7. You should now see a testnet account (starting with tb1q...)

Screenshots/Recordings

Screen.Recording.2024-07-11.at.16.37.19.mov

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[metamaskbot]

Builds ready [805ac7b]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (65 ± 7 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	66	128	95	17	8
		domContentLoaded	9	62	28	14	7
		load	47	101	65	14	7
		domInteractive	9	62	28	14	7

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 198 Bytes (0.01%)
• ui: 86 Bytes (0.00%)
• common: 610 Bytes (0.01%)

[codecov]

Codecov Report

Attention: Patch coverage is 40.54054% with 22 lines in your changes missing coverage. Please review.

Project coverage is 69.95%. Comparing base (5ee57a6) to head (42ebe44).
Report is 47 commits behind head on develop.

Files	Patch %	Lines
.../multichain/account-list-menu/account-list-menu.js	29.41%	12 Missing ⚠️
ui/store/actions.ts	0.00%	4 Missing ⚠️
...gs/experimental-tab/experimental-tab.component.tsx	25.00%	3 Missing ⚠️
app/scripts/controllers/preferences.js	0.00%	2 Missing ⚠️
...ngs/experimental-tab/experimental-tab.container.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #25772      +/-   ##
===========================================
+ Coverage    69.77%   69.95%   +0.18%     
===========================================
  Files         1376     1394      +18     
  Lines        48403    48978     +575     
  Branches     13348    13476     +128     
===========================================
+ Hits         33773    34261     +488     
- Misses       14630    14717      +87     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[metamaskbot]

Builds ready [4763e46]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (399 ± 387 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	69	721	138	136	65
		domContentLoaded	10	70	30	16	8
		load	42	2852	399	806	387
		domInteractive	10	70	30	16	8

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 198 Bytes (0.01%)
• ui: 67 Bytes (0.00%)
• common: 613 Bytes (0.01%)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[metamaskbot]

Builds ready [42ebe44]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (162 ± 203 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	63	322	108	52	25
		domContentLoaded	9	112	31	23	11
		load	41	2003	162	423	203
		domInteractive	9	112	31	23	11

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 198 Bytes (0.01%)
• ui: 67 Bytes (0.00%)
• common: 678 Bytes (0.01%)

[montelaidev]

Tested and works well on 42ebe44

[montelaidev]

This isBtcTestnetAddress would return true for a non-EVM and non-BTC address. We can probably address this later when we support other non-EVM chains

[ccharly]

Good point, and yes we would need to address this! Let's keep note of that for later

[metamaskbot]

Missing release label release-12.2.0 on PR. Adding release label release-12.2.0 on PR and removing other release labels(release-12.3.0), as PR was cherry-picked in branch 12.2.0.