### Godot version

master

### System information

Godot v4.2.beta (0ea75d77c) - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2070 (NVIDIA; 31.0.15.3598) - Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz (12 Threads)

### Issue description

When any of the Import, Filesystem, Node, or History docks are floating, changing an editor feature crashes the engine.
Changing any setting or selecting a different profile triggers it.

This is because `EditorNode::_feature_profile_changed` assumes the docks are in a `TabContainer`, and if they are floating they aren't in one.


### Steps to reproduce

Make any of these docks floating: Import, Filesystem, Node, or History
Open Editor Features (Editor -> Manage Editor Features...)
Make a profile (if you have none) or change a setting on the existing profile

### Minimal reproduction project

n/a
String path = p_full_paths[E->get()];
				
				scene_name = scene_name.get_basename();
				if (path.begins_with("res:")) {
					path = path.substr(6);
				}
				path = path.get_basename();
				
				scene_name = scene_name.trim_suffix("/");
				path = path.trim_suffix("/");
				
				
				
				can_proceed = can_proceed || (path.size() - scene_name.size()) >= 1;
				E = E->next();
				if (to_erase) {
					iset.erase(to_erase);
				}
			}
			if (!can_proceed) {
				break;
			}
		}
	}
}
void EditorNode::_version_control_menu_option(int p_idx) {