Await account render after unlock before checking for mocked endpoint…

[danjm]

… resolution in unlock-wallet.spec.js

Description

Fixes the flakiness of the should send first three Page metric events upon fullscreen page load test when run as part of the test-e2e-chrome-mmi job. While this seems to fix the issue, I don't have a 100% definite explanation. My hypothesis in making the change in this PR is that occasionaly on mmi builds the e2e tests would take longer to get past the unlock stage than expected, and so it is possible that not all metrics requests that the unlock-wallet.spec.js test is waiiting for have be made by the time the test starts looking for them.

Anecdotal evidence seems to suggest that this has worked, and that this test is passing.

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[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 [d7cdc9d]

• 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
  • common: 0, 1, 2, 3, 4, 5, 6
  • content-script: 0
  • contentscript: contentscript
  • disable-console: disable-console
  • inpage: inpage
  • policy-load: policy-load
  • sentry-install: sentry-install
  • ui: 0, 1, 10, 11, 12, 13, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (1079 ± 435 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	85	147	108	20	9
		domContentLoaded	67	152	98	22	11
		load	78	2368	1079	905	435
		domInteractive	67	152	98	22	11

Bundle size diffs

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