chore: Pass along hashed rpcUrl during CustomNetworkAdded event

[gambinish]

Description

Pass along hashed rpcUrl when added as a custom network. We are hashing the rpcUrl for privacy reasons, so that no custom rpcUrls get leaked. For instance, this would be important for those running their own ETH nodes.

When leveraging this new value, analytics should also hash rpcUrls of common rpc's on chainlist, then compare the hashes. Note that I opted not to use the URL constructor, since it will enforce trailing / on base urls when I am noticing that most urls on chainlist do not have this: https://chainlist.org/chain/1

Related issues

Fixes: MMASSETS-298 mobile PR also needs to be added.

Manual testing steps

Add CustomNetwork and ensure that the proper payload is sent in the network tab when CustomNetworkAdded event fires off.

Screenshots/Recordings

N/A

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]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.96%. Comparing base (a26c725) to head (1e05cac).
Report is 4 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #26203   +/-   ##
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  Coverage    69.96%   69.96%           
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  Files         1411     1411           
  Lines        49946    49946           
  Branches     13805    13805           
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  Hits         34942    34942           
  Misses       15004    15004           

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[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 [8eea39d]

• 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:

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Page Load Metrics (333 ± 304 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	60	252	109	42	20
		domContentLoaded	9	54	27	16	7
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Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 677 Bytes (0.01%)
• common: 0 Bytes (0.00%)

[metamaskbot]

Builds ready [1e05cac]

• 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 (348 ± 314 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	87	361	122	58	28
		domContentLoaded	10	58	25	13	6
		load	46	1948	348	654	314
		domInteractive	10	58	25	14	6

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 677 Bytes (0.01%)
• common: 0 Bytes (0.00%)