chore: MMI-5248 introduce the token allowance functionality for MMI

[zone-live]

Description

Adds code fences to enable the token allowance functionality for MMI by following the correct flow.

Related issues

Fixes:

Manual testing steps

1. Go to this page...

Screenshots/Recordings

Before

After

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.

[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 [bd414b2]

• 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, 10, 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 (72 ± 10 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	67	144	101	21	10
		domContentLoaded	10	60	26	12	6
		load	41	117	72	21	10
		domInteractive	10	60	26	12	6

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: -20 Bytes (-0.00%)
• common: 0 Bytes (0.00%)

[codecov]

Codecov Report

Attention: Patch coverage is 16.66667% with 20 lines in your changes missing coverage. Please review.

Project coverage is 69.69%. Comparing base (15cd69d) to head (bd414b2).
Report is 20 commits behind head on develop.

Files	Patch %	Lines
...s/confirmations/token-allowance/token-allowance.js	17.39%	19 Missing ⚠️
...s/confirmations/confirm-approve/confirm-approve.js	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #25967      +/-   ##
===========================================
- Coverage    69.75%   69.69%   -0.06%     
===========================================
  Files         1400     1400              
  Lines        49419    49482      +63     
  Branches     13668    13687      +19     
===========================================
+ Hits         34470    34482      +12     
- Misses       14949    15000      +51     

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[vinistevam]

Nit: Consider using an enum for accountType values to centralize and standardize.
Same for custodyStatus = 'created'.