### 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)

case SUB_WINDOW_RESIZE_BOTTOM: {
						diff.y = MAX(diff.y, -limit.y);
						r.size.y += diff.y;
					} break;
					case SUB_WINDOW_RESIZE_BOTTOM_RIGHT: {
						diff.x = MAX(diff.x, -limit.x);
						diff.y = MAX(diff.y, -limit.y);
						r.size += diff;
					} break;
					default: {
					}
				}
				Size2i max_size = gui.currently_dragged_subwindow->get_max_size();
				if ((max_size.x > 0 || max_size.y > 0) && (max_size.x >= min_size.x && max_size.y >= min_size.y)) {
					max_size.x = MAX(max_size.x, 1);
					max_size.y = MAX(max_size.y, 1);
					if (r.size.x > max_size.x) {
						r.size.x = max_size.x;
					}
					if (r.size.y > max_size.y) {
						r.size.y = max_size.y;
					}
				}
				gui.currently_dragged_subwindow->_rect_changed_callback(r);
			}
			if (gui.currently_dragged_subwindow) { 
				_sub_window_update(gui.currently_dragged_subwindow);
			}
		}
		return true;