chore(demo): rename public channel overlay

[MartinCupela]

🎯 Goal

Forgot to push the renaming to already closed PR #3157

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.53%. Comparing base (76228d8) to head (f026518).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3161   +/-   ##
=======================================
  Coverage   83.53%   83.53%           
=======================================
  Files         434      434           
  Lines       12928    12928           
  Branches     4161     4161           
=======================================
  Hits        10800    10800           
  Misses       2128     2128           

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[github-actions]

Size Change: 0 B

Total Size: 672 kB

ℹ️ View Unchanged

Filename	Size
dist/cjs/audioProcessing.js	1.32 kB
dist/cjs/emojis.js	3.01 kB
dist/cjs/index.js	267 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/css/index.css	39.3 kB
dist/es/audioProcessing.mjs	1.31 kB
dist/es/emojis.mjs	2.52 kB
dist/es/index.mjs	265 kB
dist/es/mp3-encoder.mjs	756 B
dist/es/useNotificationApi.mjs	45.2 kB

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