File Dialog is extremely slow inside the editor

[aliasbody]

Tested versions

• Reproducible in: 4.3-dev5, 4.2.2-stable, 4.2.1-stable

System information

Godot v4.2.2.stable - Fedora Linux 39 (Workstation Edition) - Wayland - Vulkan (Forward+) - dedicated AMD Radeon RX 6700 XT (RADV NAVI22) () - AMD Ryzen 9 5900X 12-Core Processor (24 Threads)

Issue description

When the File Dialog (for example, Scene > Import Scene) is opened, no matter the number of files in it, it works fast. But once we put it in a higher size (even a few pixels wider) it becomes really slow (to the point where it's hard to navigate). The issue also seem to only affect wayland.

Steps to reproduce

1 - Create a new Project
2 - Scene > Open Scene...
3 - Bottom right select "All Files" (to see the basic godot project files)
4 - Point the mouse over the files and move to see the hover animation (it works fast)
5 - Scale the window up, or maximize it, and try to do the same as step 4 (it will be very slow)

Minimal reproduction project (MRP)

N/A

[aliasbody]

The issue doesn't seem to happen in X11, it only happens on Wayland.