fix: #3624819 Remove duplicate button.css entry from Claro's theme CSS category

Summary

Fixes Views UI action list button spacing in Claro by removing a duplicate CSS entry.

Problem / motivation

Same underlying bug as core issue #3616100, filed separately here because Claro was removed from Drupal core (Drupal 12) in #3584639 and now lives as its own project.

claro.libraries.yml lists css/components/button.css under both the component and theme CSS categories in the global-styling library. This pushes button.css after views-ui.css in the aggregated CSS, letting button.css's default styling override the Views UI action-list button reset.

Steps to reproduce

1. Install Drupal with Claro as the admin theme.
2. Go to admin/structure/views/view/content.
3. Click "+ Add" above the display tabs.
4. Observe the dropdown items render as boxed buttons with visible background and border, instead of a flat list.

Proposed resolution

Remove the duplicate css/components/button.css line under the theme category in claro.libraries.yml, leaving the single, correct entry under component.

Files changed

claro.libraries.yml

Testing

Verified locally that button.css loads before views-ui.css in the aggregated CSS output. Verified in a browser that action-list buttons render with correct spacing in rest and hover states.

Generated with the help of an LLM.