Fix incorrect target for hidden copy component

[hudson-newey]

Fix incorrect target for hidden copy component

There was previously a bug where the touch target for the HiddenCopyComponent was the copy icon, not the copy button.

This is was exacerbated by the fact that there were no unit tests to assert that this component would copy text correctly.

Changes

• Changes the HiddenCopyCompont's copy touch target to the copy button instead of the copy icon
• Adds unit tests to assert that the copy button works correctly

Issues

Fixes: #2146

Visual Changes

Should be unchanged, let me know if you see any discrepancies

Final Checklist

• Assign reviewers if you have permission
• Assign labels if you have permission
• Link issues related to PR
• Ensure project linter is not producing any warnings (npm run lint)
• Ensure build is passing on all browsers (npm run test:all)
• Ensure CI build is passing
• Ensure docker container is passing (docs)

[github-actions]

Size Change: +71 B (0%)

Total Size: 3.91 MB

Filename	Size	Change
dist/workbench-client/browser/index.html	4.81 kB	+1 B (+0.02%)
dist/workbench-client/browser/main-YWRP5WNH.js	0 B	-1.13 MB (removed)	🏆
dist/workbench-client/server/main.js	1.94 MB	+38 B (0%)
dist/workbench-client/browser/main-YERRD7N3.js	1.13 MB	+1.13 MB (new file)	🆕

ℹ️ View Unchanged

Filename	Size
dist/workbench-client/browser/assets/buffer-builder-processor-BhnxGUx8.js	1.16 kB
dist/workbench-client/browser/assets/environment.json	555 B
dist/workbench-client/browser/assets/high-accuracy-time-processor-BevUJNwo.js	354 B
dist/workbench-client/browser/assets/test-assets/index.html	21 B
dist/workbench-client/browser/chunk-NPDQGTTA.js	1.17 kB
dist/workbench-client/browser/chunk-U5EWAFH4.js	379 kB
dist/workbench-client/browser/manifest.json	147 B
dist/workbench-client/browser/polyfills-C5CKP5CH.js	12.4 kB
dist/workbench-client/browser/styles-ETV6J7SM.css	39.6 kB
dist/workbench-client/server/267.js	390 kB
dist/workbench-client/server/327.js	4.21 kB

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[github-actions]

Unit Test Results

         6 files           6 suites   10m 13s ⏱️
24 246 tests 23 502 ✔️ 744 💤 0 ❌
24 468 runs  23 724 ✔️ 744 💤 0 ❌

Results for commit 1078ecc.