feat: Make Jest unit tests run faster in GitHub actions

[itsyoboieltr]

Description

Based on #25680, by migrating the jest unit tests from CircleCI to GitHub actions the time to run unit tests has increased to 15 minutes from 5 minutes. This PR makes Jest unit tests run faster in Github actions. This is achieved by some improvements to the testing infrastructure.

1. Sharding: the tests are run on 6 machines in parallel, instead of a single machine. This saves around ~8-9 minutes on average.
2. Optimized coverage generation: I removed the generation of html reports in CI, as they are only used for local debugging. This should also save some time, as unused files are not being generated on CI.
3. Merged development tests: The two small tests under build/transforms were merged into the main test configuration. This means that one less machine needs to be started (as the development tests would require their own machine to run, due to the sharding introduced in this PR), saving around approx. 2 minutes of compute time.
4. Minor fixes: Now the run-unit-tests workflow will also run on push to the develop and master branches.

Related issues

Fixes: #25680,

Manual testing steps

1. Run CI and see that tests are running fast (between 5-7 mins on average)

Screenshots/Recordings

Not Applicable

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 [726823a]

• 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 (132 ± 142 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	67	123	93	14	7
		domContentLoaded	10	55	25	11	5
		load	48	1422	132	296	142
		domInteractive	10	55	25	11	5

Bundle size diffs

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.96%. Comparing base (5ee57a6) to head (5dfed06).
Report is 34 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #25726      +/-   ##
===========================================
+ Coverage    69.77%   69.96%   +0.19%     
===========================================
  Files         1376     1390      +14     
  Lines        48403    48895     +492     
  Branches     13348    13451     +103     
===========================================
+ Hits         33773    34207     +434     
- Misses       14630    14688      +58     

☔ View full report in Codecov by Sentry.
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[metamaskbot]

Builds ready [0e23cd2]

• 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 (143 ± 167 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	71	238	97	35	17
		domContentLoaded	10	40	22	9	4
		load	42	1658	143	348	167
		domInteractive	10	40	22	9	4

Bundle size diffs

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

[sonarcloud]

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

[Gudahtt]

LGTM!

[metamaskbot]

Builds ready [5dfed06]

• 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 (72 ± 8 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	69	134	102	15	7
		domContentLoaded	9	65	29	16	7
		load	45	105	72	17	8
		domInteractive	9	65	29	16	7

Bundle size diffs

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