Synchronize the cursor size setting

Merged Mikhail Zolotukhin requested to merge gikari/kde-gtk-config:set-cursor-size into master

BUG: 421133

Depends on

🧪 Test

  1. Open Wayland session
  2. Open GTK app
  3. Change the cursor size from Cursor KCM
  4. Cursor size in GTK app should change to the appropriate size
Edited by Mikhail Zolotukhin

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