is_anything_pressed() returns false if a key was pressed while the window was unfocused

[KoBeWi]

Godot version

4.1

System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

Issue description

Here you can see d appearing in the LineEdit, while is_anything_pressed() returns false.

godot.windows.editor.dev.x86_64_UbQXqJSTRY.mp4

Magic?

(note that the bug is not directly related to is_anything_pressed() but to the underlying implementation that tracks pressed keys)

Steps to reproduce

1. Add is_anything_pressed() check that runs continuously
2. Unfocus the window
3. Press and hold any key
4. Focus the window
5. The key is not detected

Minimal reproduction project

N/A

[Sauermann]

Similar thing happens for mouse events: related to #33928
I believe that the solution for this would be to add platform-specific code to query the current state of mouse/keyboard/controller/... states on NOTIFICATION_APPLICATION_FOCUS_IN.