### Godot version

4.0.2

### System information

Windows 10,Radeon RX 550/550 Series,23.3.2,Vulkan

### Issue description

After Switching to the animations tabs and pressing the key symbol because I wanted to know what it does, Godot crashes

### Steps to reproduce

Go into a project 
Switch to the Animations Tab, make sure no animation is active 
And then press on the key symbol

here is a video demonstrating the bug

https://user-images.githubusercontent.com/59411880/233839816-5489899e-828f-4ac9-9de3-7914f727f754.mp4



### Minimal reproduction project

The File
[package.zip](https://github.com/godotengine/godot/files/11303712/package.zip)

ERR_FAIL_COND(!p_control);
	context_menu_hbox->add_child(p_control);
}
void CanvasItemEditor::remove_control_from_menu_panel(Control *p_control) {
	context_menu_hbox->remove_child(p_control);
}
void CanvasItemEditor::add_control_to_left_panel(Control *p_control) {
	left_panel_split->add_child(p_control);
	left_panel_split->move_child(p_control, 0);
}
void CanvasItemEditor::add_control_to_right_panel(Control *p_control) {
	right_panel_split->add_child(p_control);
	right_panel_split->move_child(p_control, 1);
}
void CanvasItemEditor::remove_control_from_left_panel(Control *p_control) {
	left_panel_split->remove_child(p_control);
}
void CanvasItemEditor::remove_control_from_right_panel(Control *p_control) {
	right_panel_split->remove_child(p_control);
}
VSplitContainer *CanvasItemEditor::get_bottom_split() {