### 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
Container::move_child_notify(p_child);
	if (p_child == tab_bar) {
		return;
	}
	Control *c = Object::cast_to<Control>(p_child);
	if (c && !c->is_set_as_top_level()) {
		int old_idx = -1;
		String tab_name = String(c->get_meta("_tab_name", c->get_name()));
		
		for (int i = 0; i < get_tab_count(); i++) {
			if (get_tab_title(i) == tab_name) {
				old_idx = i;
				break;
			}
		}
		tab_bar->move_tab(old_idx, get_tab_idx_from_control(c));
	}
}
void TabContainer::remove_child_notify(Node *p_child) {