[gtk] (26 commits) Non-fast-forward update to branch wip/baedert/single-node-window

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/single-node-window' 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:

  d48b461... widget: Remove GtkWindow special case in create_render_node
  c25f2ba... widget: Make 1 if out of 2 ifs
  a1bd9ca... window: Remove custom snapshot() implementation
  0083809... window: Don't care about shadow in size_allocate()
  1d7556d... window: Don't care about shadow in measure()
  94e7bb0... window: Remove decoration node
  c676656... main: Inline propagate_{down,up} in propagate_internal()
  0646315... window: Fix titled -> tiled typo
  5853587... /o\
  c281170... gl renderer: Fix nested rounded clip rendering

Commits added to the branch:

  6ae01f9... docs: Remove redundant SECTION (*)
  68682dd... docs: Remove unnecessary SECTION (*)
  58774ee... docs: Add annotations for GtkPaned new getters (*)
  09ea880... printoperation-unix: Fix a use-after-free (*)
  8053981... Merge branch 'docs-fixes' into 'master' (*)
  c916221... Merge branch 'matthiasc/for-master' into 'master' (*)
  f858a26... NEWS: Updates (*)
  694daa1... Move print-editor to demos (*)
  c133db4... Drop the gtkgears test (*)
  e7bf4a3... tests: Move testcairo into gtk4-demo (*)
  fe6238d... tests: Drop the visuals test (*)
  a37dc29... paned: Drop the Private struct (*)
  b230ea2... paned: Don't ignore the type attribute (*)
  a4debec... Merge branch 'tests-cleanup' into 'master' (*)
  9c13bf7... Merge branch 'matthiasc/for-master' into 'master' (*)
  c66f2ca... x11: Avoid a critical in clipboard data transfer (*)
  8d9a3de... Merge branch 'matthiasc/for-master' into 'master' (*)
  70c5af9... widget: Remove GtkWindow special case in create_render_node
  c5f75e3... widget: Make 1 if out of 2 ifs
  83062ee... window: Remove custom snapshot() implementation
  80b8a83... window: Don't care about shadow in size_allocate()
  55df248... window: Don't care about shadow in measure()
  e577335... window: Remove decoration node
  a301d18... main: Inline propagate_{down,up} in propagate_internal()
  65ebeaf... window: Fix titled -> tiled typo
  3ecb688... /o\

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