### 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)

if (!gui.tooltip_control) {
		return;
	}
	
	Control *tooltip_owner = nullptr;
	String tooltip_text = _gui_get_tooltip(
			gui.tooltip_control,
			gui.tooltip_control->get_global_transform().xform_inv(gui.last_mouse_pos),
			&tooltip_owner);
	tooltip_text = tooltip_text.strip_edges();
	if (tooltip_text.is_empty()) {
		return; 
	}
	
	if (gui.tooltip_popup) {
		memdelete(gui.tooltip_popup);
	}
	if (!tooltip_owner) {
		return;
	}
	
	PopupPanel *panel = memnew(PopupPanel);