fix: minor changes to improve stability for e2e tests

[Shobhit1]

Description of changes

One of the most common timeout issue in our e2e was in settings-panel & high-contrast e2e tests where the keyPress('escape') was not getting registered properly and so I changed that event with pressing the cross button on the settings panel to exit it. This should hopefully fix that timeout error on settings panel tests.

Also added --no-cache to yarn:dev in our docker to avoid a dev build cache system which I was hitting regularly in my local build.

Pull request checklist

• Addresses an existing issue: #0000
• Ran yarn fastpass
• Added/updated relevant unit test(s) (and ran yarn test)
• Verified code coverage for the changes made. Check coverage report at: <rootDir>/test-results/unit/coverage
• PR title AND final merge commit title both start with a semantic tag (fix:, chore:, feat(feature-name):, refactor:). Check workflow guide at: <rootDir>/docs/workflow.md
• (UI changes only) Added screenshots/GIFs to description above
• (UI changes only) Verified usability with NVDA/JAWS

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