[gtk] (10 commits) Created branch wip/chergert/for-main

[Christian Hergert <chergert src gnome org>]

The branch 'wip/chergert/for-main' was created.

Summary of new commits:

  c6f21c2... macos: add note about display coordinate changes
  d75f36b... macos: cleanup popup surface properties and compute-size
  0810799... macos: avoid re-entrancy when changing monitors
  c64c860... macos: reposition popup children when monitors move
  2e760e3... macos: add clamp helper for monitor workarea
  e47ef9b... macos: handle transient-for in configure
  6d3492f... macos: rely on GdkMacosBuffer for damage tracking
  06aa2b1... macos: use clamp helpers for monitor positioning
  2ebd641... macos: configure before using position when monitor changes
  3229037... macos: always invalidate after monitor change