[stable31] fix: add close button when open readonly files on mobile app

[backportbot]

Backport of PR #7624

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 57.69%. Comparing base (5d3b33b) to head (e934067).
⚠️ Report is 3 commits behind head on stable31.

Additional details and impacted files

@@            Coverage Diff            @@
##           stable31    #7673   +/-   ##
=========================================
  Coverage     57.69%   57.69%           
=========================================
  Files           291      291           
  Lines         37188    37191    +3     
  Branches        874      874           
=========================================
+ Hits          21455    21458    +3     
  Misses        15613    15613           
  Partials        120      120           

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