Ensure configured Design overrides Template default

[philippjfr]

Fixes #8379

[Copilot]

Pull request overview

This PR fixes an issue where templates with generic designs (like GoldenTemplate) were not respecting the design configured via pn.extension(design="...") in Panel 1.8. The fix ensures that when config.design is set and a template doesn't have a specific design override, the configured design is applied to the template.

Changes:

• Added logic to override template design with config.design when the template uses a generic design (Design, Native, or None)
• Added a test to verify that VanillaTemplate inherits the configured Material design from config

Reviewed changes

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

File	Description
panel/template/base.py	Added condition in BaseTemplate.__init__ to set template design from config.design when template has generic design default; imported Native design class for the check
panel/tests/template/test_base.py	Added test test_template_inherits_configured_design to verify templates inherit configured design; imported Material theme class

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.10%. Comparing base (0317607) to head (c2f7eb3).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8388      +/-   ##
==========================================
- Coverage   86.11%   86.10%   -0.02%     
==========================================
  Files         349      349              
  Lines       54833    54841       +8     
==========================================
  Hits        47222    47222              
- Misses       7611     7619       +8     

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[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.