limit x server check to CI

[PeterYinusa]

Related: #12043

Explanation: Allows you to run metamask-ui.spec.js e2e tests locally using Chrome

[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 [2b57a13]

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

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

Page Load Metrics (369 ± 33 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	70	519	226	139	67
		domContentLoaded	260	520	354	68	33
		load	279	529	369	69	33
		domInteractive	260	520	354	68	33

[Gudahtt]

LGTM!

[mcmire]

Blurgh, I thought I did this already 😆 Thank you!