feat(a11y): make ChannelListItemActionButtons accessible with keyboard

[MartinCupela]

🎯 Goal

Closes REACT-977

When the ChannelListItem is focused, we need to show the actions list menu button so that it can be navigated to using keyboard.

[codecov]

Codecov Report

❌ Patch coverage is 73.33333% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.54%. Comparing base (8fa096a) to head (541a330).

Files with missing lines	Patch %	Lines
...s/ChannelListItem/ChannelListItemActionButtons.tsx	73.33%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3176      +/-   ##
==========================================
- Coverage   83.60%   83.54%   -0.06%     
==========================================
  Files         435      435              
  Lines       12981    12996      +15     
  Branches     4179     4182       +3     
==========================================
+ Hits        10853    10858       +5     
- Misses       2128     2138      +10     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[github-actions]

Size Change: +337 B (+0.05%)

Total Size: 677 kB

📦 View Changed

Filename	Size	Change
dist/cjs/index.js	269 kB	+174 B (+0.06%)
dist/css/index.css	39.6 kB	+4 B (+0.01%)
dist/es/index.mjs	267 kB	+159 B (+0.06%)

ℹ️ View Unchanged

Filename	Size
dist/cjs/audioProcessing.js	1.32 kB
dist/cjs/emojis.js	3.01 kB
dist/cjs/mp3-encoder.js	1.27 kB
dist/cjs/useNotificationApi.js	45.4 kB
dist/css/emoji-picker.css	178 B
dist/css/emoji-replacement.css	456 B
dist/es/audioProcessing.mjs	1.31 kB
dist/es/emojis.mjs	2.52 kB
dist/es/mp3-encoder.mjs	756 B
dist/es/useNotificationApi.mjs	45.2 kB

_{compressed-size-action}