The ruler code would add new (GP) ID and link it to current scene outside
of any depsgraph tagging and/or undo step writing.
Now always add this 'util' GP data earlier, in a context where there is a clear
undo step written. Also fixes the missing tagging and relations updates.
Pull Request: https://projects.blender.org/blender/blender/pulls/116751
da1ed32f76