GtkColumnView doesn't work well with RTL
Steps to reproduce
- Run GTK demo from flatpak git
- Open Settings demo
- Switch to Right-to-Left in Inspector
- Resize the columns
Current behaviour
The resizing handle of a column is on the right side of the column instead of the left side.
The anchoring point is to the left of the column view instead of the right.
Expected outcome
The resizing handle of a column is on the left side of the column in Right-to-Left (i.e. reversed).
The anchoring point is to the right of the column view in Right-to-Left (i.e. reversed).
Version information
GTK 4.13, Flatpak, Ubuntu 23.04, X11.