### Godot version

v4.2.dev.custom_build [c3b0a92c3]

### System information

Debian Linux X11 Xfce

### Issue description

In the following scene tree it is not possible to write anything in `LineEditB`.
![image](https://github.com/godotengine/godot/assets/6299227/ce5f696a-d86a-402f-98f7-6a762f15543e)

I would expect, that it is possible to focus `LineEditB` with a mouse click and write into it.

Regression from #58334

### Steps to reproduce

1. Load and run MRP
2. Mouse Click into the left LineEditB
3. Type Keyboard => No letters appear in the LineEditB

Variant:

1. Load and run MRP
2. Mouse Click into the right LineEditA
3. Mouse Click into the left LineEditB
4. Type Keyboard => Letters appear in LineEditA instead of LineEditB


### Minimal reproduction project

[BugKeyInputRouting.zip](https://github.com/godotengine/godot/files/11994804/BugKeyInputRouting.zip)

ERR_READ_THREAD_GUARD_V(false);
	return is_audio_listener_3d_enabled;
}
void Viewport::_update_audio_listener_3d() {
	if (AudioServer::get_singleton()) {
		AudioServer::get_singleton()->notify_listener_changed();
	}
}
void Viewport::_listener_transform_3d_changed_notify() {
}
void Viewport::_audio_listener_3d_set(AudioListener3D *p_listener) {
	if (audio_listener_3d == p_listener) {
		return;
	}
	audio_listener_3d = p_listener;
	_update_audio_listener_3d();
	_listener_transform_3d_changed_notify();
}
bool Viewport::_audio_listener_3d_add(AudioListener3D *p_listener) {
	audio_listener_3d_set.insert(p_listener);
	return audio_listener_3d_set.size() == 1;
}
void Viewport::_audio_listener_3d_remove(AudioListener3D *p_listener) {