[stable-3.9] Fix macOS icon

[backportbot-nextcloud]

backport of #5757

[codecov]

Codecov Report

Merging #5762 (00ba4e6) into stable-3.9 (651c749) will increase coverage by 0.10%.
The diff coverage is n/a.

❗ Current head 00ba4e6 differs from pull request most recent head f419cb7. Consider uploading reports for the commit f419cb7 to get more accurate results

Additional details and impacted files

@@              Coverage Diff               @@
##           stable-3.9    #5762      +/-   ##
==============================================
+ Coverage       60.26%   60.36%   +0.10%     
==============================================
  Files             143      143              
  Lines           18518    18518              
==============================================
+ Hits            11159    11179      +20     
+ Misses           7359     7339      -20     

see 7 files with indirect coverage changes

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[nextcloud-desktop-bot]

AppImage file: nextcloud-PR-5762-f419cb72936211c5bb97028aad76caff162256b3-x86_64.AppImage

To test this change/fix you can simply download above AppImage file and test it.

Please make sure to quit your existing Nextcloud app and backup your data.