[vala] (14 commits) Non-fast-forward update to branch wip/gtk4

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/gtk4' 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:

  a086dd0... vapi: Add unstable bindings for gtk+-4.0 3.89+

Commits added to the branch:

  6967f41... gdk-3.0: Update to 3.22.2+0ad5d51d (*)
  1975db0... webkit2gtk-4.0: Update to 2.15.1 (*)
  7d01cf8... codegen: Drop superfluous dynamic-type cast (*)
  41ad68f... Use more "...".printf to concat strings (*)
  1897979... codegen: Some simplifications (*)
  6fd1e86... vala: Avoid superfluous string copying (*)
  0f65d30... ccode: Replace if-else-tree with switch (*)
  706ff17... Avoid some string copying (*)
  76789fa... vala: Add missing TokeType cases for to_string() (*)
  2d7df5c... field: Drop unused methods (*)
  061d0e1... writer: Some string optimizations (*)
  b552f38... ccodewriter: Use private _bol field instead of property (*)
  e65e411... Don't create constant Regex on demand and use static field  (*)
  cd21e5b... vapi: Add unstable bindings for gtk+-4.0 (based on 3.89.0+3

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