### Godot version

4.1.dev (dc625bcbfc5b587ba8867481ee7a1f6a567c25d0)

### System information

Mageia 9, Linux

### Issue description

When importing a project in current `master`, the following error is raised for each asset that gets imported:
```
Attempting to parent and popup a dialog that already has a parent.
```

It seems to be raised once per asset, caused by the progress dialog.

CC @bruvzg

### Steps to reproduce

- Import a new project in Godot that contains importable assets, e.g. https://github.com/RPicster/godot4-demo-desert-light

### Minimal reproduction project

See above.
if (is_inside_tree() && wrap_controls) {
		child_controls_changed();
	}
}
void Window::remove_child_notify(Node *p_child) {
	if (is_inside_tree() && wrap_controls) {
		child_controls_changed();
	}
}
void Window::set_theme_owner_node(Node *p_node) {
	ERR_MAIN_THREAD_GUARD;
	theme_owner->set_owner_node(p_node);
}
Node *Window::get_theme_owner_node() const {
	ERR_READ_THREAD_GUARD_V(nullptr);
	return theme_owner->get_owner_node();
}
bool Window::has_theme_owner_node() const {