fix(30509): remove 'fake-metrics-id' in e2e to avoid controller error

[DDDDDanica]

Description

A variety of E2E tests now have console errors in the service worker process related to failures fetching remote feature flags. The error is caused by an invalid mock metametrics ID (fake-metrics-id). Since we introduced validation in @metamas/remote-feature-flags controller: https://github.com/MetaMask/core/blob/main/packages/remote-feature-flag-controller/src/utils/user-segmentation-utils.ts#L52, we need to modify the existing e2e test how metametricsId is mocked into a valid hex value.

Related issues

Fixes: #30509

Manual testing steps

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Screenshots/Recordings

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After

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[metamaskbot]

Builds ready [889d57e]

• builds: chrome, firefox
• builds (flask): chrome, firefox
• builds (MMI): chrome
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1538 ± 41 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1390	1773	1536	91	44
		domContentLoaded	1379	1752	1502	87	42
		load	1389	1773	1538	86	41
		domInteractive	23	92	40	18	8
		backgroundConnect	12	65	36	17	8
		firstReactRender	13	76	28	23	11
		getState	4	59	11	15	7
		initialActions	0	0	0	0	0
		loadScripts	1004	1305	1099	76	36
		setupStore	7	71	23	24	12
		uiStartup	1553	2047	1754	106	51

Bundle size diffs

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

[FrederikBolding]

Snaps changes LGTM