[Linux] Keypad period key only deletes, even in numlock

[adamscott]

Tested versions

• Reproducible in: master
• Not reproducible in: 4.4.beta2

Bisected to 140a63b

System information

Godot v4.4.beta (0b6a717) - Fedora Linux 41 (Workstation Edition) on Wayland - X11 display driver, Multi-window, 1 monitor - Vulkan (Forward+) - dedicated AMD Radeon RX Vega (RADV VEGA10) - AMD Ryzen 7 5800X 8-Core Processor (16 threads)

Issue description

In the editor, when typing the period key (numpad), it always deletes, instead of inserting a period, even in numlock.

Steps to reproduce

1. Open the editor
2. Pick any field/code editor
3. Press period on your numpad

Minimal reproduction project (MRP)

n/a

[Giganzo]

See #102404