Ensure icon_size overrides standard size

[philippjfr]

Fixes regression in icon sizing introduced in #555

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.54%. Comparing base (9fdb112) to head (e9b004c).

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #556       +/-   ##
===========================================
+ Coverage   67.86%   80.54%   +12.68%     
===========================================
  Files          31       31               
  Lines        3146     3146               
===========================================
+ Hits         2135     2534      +399     
+ Misses       1011      612      -399     

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[Copilot]

Pull request overview

This pull request fixes a regression in icon sizing where the icon_size parameter was not properly overriding the size parameter in the FileDownload widget. The fix ensures that custom icon sizes are correctly applied by updating the icon rendering logic to properly prioritize icon_size over size, and updating FileDownload to pass the size parameter to the icon rendering function for proper fallback behavior.

Changes:

• Updated render_icon function to correctly prioritize icon_size over size using the appropriate CSS property (fontSize prop for standard sizes, style prop for custom sizes)
• Modified FileDownload widget to pass size parameter to render_icon calls, making it consistent with the Button widget implementation

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/panel_material_ui/utils.js	Refactored icon_font_size calculation logic to properly handle standard vs custom sizes, ensuring icon_size takes precedence over size
src/panel_material_ui/widgets/FileDownload.jsx	Updated render_icon calls to pass size parameter instead of null, enabling proper fallback behavior when icon_size is not a standard size

[Copilot]

There is no test coverage for FileDownload widget's icon_size behavior. Consider adding a test similar to test_fab_icon_size in tests/ui/widgets/test_fab.py to verify that icon_size correctly overrides the size parameter for FileDownload.