### 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)

BIND_ENUM_CONSTANT(SHADOW_ATLAS_QUADRANT_SUBDIV_256);
	BIND_ENUM_CONSTANT(SHADOW_ATLAS_QUADRANT_SUBDIV_1024);
	BIND_ENUM_CONSTANT(SHADOW_ATLAS_QUADRANT_SUBDIV_MAX);
	BIND_ENUM_CONSTANT(SCALING_3D_MODE_BILINEAR);
	BIND_ENUM_CONSTANT(SCALING_3D_MODE_FSR);
	BIND_ENUM_CONSTANT(SCALING_3D_MODE_MAX);
	BIND_ENUM_CONSTANT(MSAA_DISABLED);
	BIND_ENUM_CONSTANT(MSAA_2X);
	BIND_ENUM_CONSTANT(MSAA_4X);
	BIND_ENUM_CONSTANT(MSAA_8X);
	BIND_ENUM_CONSTANT(MSAA_MAX);
	BIND_ENUM_CONSTANT(SCREEN_SPACE_AA_DISABLED);
	BIND_ENUM_CONSTANT(SCREEN_SPACE_AA_FXAA);
	BIND_ENUM_CONSTANT(SCREEN_SPACE_AA_MAX);
	BIND_ENUM_CONSTANT(RENDER_INFO_OBJECTS_IN_FRAME);
	BIND_ENUM_CONSTANT(RENDER_INFO_PRIMITIVES_IN_FRAME);
	BIND_ENUM_CONSTANT(RENDER_INFO_DRAW_CALLS_IN_FRAME);
	BIND_ENUM_CONSTANT(RENDER_INFO_MAX);
	BIND_ENUM_CONSTANT(RENDER_INFO_TYPE_VISIBLE);
	BIND_ENUM_CONSTANT(RENDER_INFO_TYPE_SHADOW);
	BIND_ENUM_CONSTANT(RENDER_INFO_TYPE_MAX);
	BIND_ENUM_CONSTANT(DEBUG_DRAW_DISABLED);
	BIND_ENUM_CONSTANT(DEBUG_DRAW_UNSHADED);
	BIND_ENUM_CONSTANT(DEBUG_DRAW_LIGHTING);
	BIND_ENUM_CONSTANT(DEBUG_DRAW_OVERDRAW);
	BIND_ENUM_CONSTANT(DEBUG_DRAW_WIREFRAME);
	BIND_ENUM_CONSTANT(DEBUG_DRAW_NORMAL_BUFFER);
	BIND_ENUM_CONSTANT(DEBUG_DRAW_VOXEL_GI_ALBEDO);
	BIND_ENUM_CONSTANT(DEBUG_DRAW_VOXEL_GI_LIGHTING);
	BIND_ENUM_CONSTANT(DEBUG_DRAW_VOXEL_GI_EMISSION);