Remove unnecessary mounted state from Home component

[Gudahtt]

The mounted state was used to derive state from props before the first render of the Home component. Instead this state is now derived in the constructor, which is also run before the first render. This should behave exactly the same, except now we don't need the mounted state or the deriveStateFromProps function anymore.

The call to closeCurrentWindow that was made in componentDidUpdate has been moved to the constructor as well. There is no need to delay that call, and this saves us from having to compare current with previous state in that lifecycle function.

Manual testing steps:

• All confirmation flows rely upon this logic. I'd suggest testing every confirmation you can think of, and ensuring that the Home screen is rendered correctly in the fullscreen UI when it's open at the same time as the confirmation.

[metamaskbot]

Builds ready [43844a4]

• builds: chrome, firefox, opera
• builds (beta): chrome, firefox, opera
• builds (flask): chrome, firefox, opera
• build viz: Build System
• code coverage: Report
• storybook: Storybook
• all artifacts
• bundle viz:

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

Page Load Metrics (1293 ± 78 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	78	1397	692	525	252
		domContentLoaded	1064	1693	1293	162	78
		load	1064	1693	1293	162	78
		domInteractive	1064	1693	1293	162	78

[darkwing]

All confirmations and suggestions worked for me. Well done!

[rekmarks]

The confirmations work on my device. LGTM!