[stable5.0] Fix: avoid hotkeys in contenteditable

[backportbot]

Backport of PR #6639

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 15.40%. Comparing base (6181304) to head (6e689e2).
Report is 14 commits behind head on stable5.0.

Files with missing lines	Patch %	Lines
src/main.js	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           stable5.0    #6640   +/-   ##
==========================================
  Coverage      15.40%   15.40%           
==========================================
  Files            206      206           
  Lines           9458     9458           
  Branches        2207     2207           
==========================================
  Hits            1457     1457           
  Misses          7682     7682           
  Partials         319      319           

Flag	Coverage Δ
javascript	15.40% <0.00%> (ø)

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