[gtk] (15 commits) Non-fast-forward update to branch wip/baedert/for-master

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/for-master' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  e2fc09b... testblur: Fix default blur radius
  37e9053... gl renderer: Blur shader improvements
  8249ac6... gl renderer: Add some often needed debug code
  a5cab5c... gl renderer: Scale blur radius
  3cb61e3... gl renderer: Take a TextureRegion in blur_texture
  9a86394... gl renderer: Implement blurred shadow nodes
  26a8bbc... snapshot: Factor out color matrix merging
  3d0d942... snapshot: Reorder color matrix nodes containing a transform
  1c10f99... window: Don't set invalid csd input shape
  3a237cc... Revert "widget-factory: Fix a popover menu"
  0b2b8dc... gl renderer: Save one level of indentation

Commits added to the branch:

  4f82a0d... Adwaita: Avoid directly coloring labels wherever possible (*)
  5bdd256... reftests: Fix css-multi-state test (*)
  9d94627... Merge branch 'dont-color-labels-directly-gtk4' into 'master (*)
  c2a5a6a... testblur: Fix default blur radius
  70a6159... gl renderer: Blur shader improvements
  6935027... gl renderer: Add some often needed debug code
  7cd3d09... gl renderer: Scale blur radius
  9aedb24... gl renderer: Take a TextureRegion in blur_texture
  f1bcf4f... gl renderer: Implement blurred shadow nodes
  e89a2b9... snapshot: Factor out color matrix merging
  b559c20... snapshot: Reorder color matrix nodes containing a transform
  286783d... window: Don't set invalid csd input shape
  05de743... Revert "widget-factory: Fix a popover menu"
  aeb5acf... gl renderer: Save one level of indentation
  3f6b6ee... cssshadowvalue: Simplify inset shadow nodes to color nodes 

(*) This commit already existed in another branch; no separate mail sent