### 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.
help_menu->add_icon_shortcut(gui_base->get_theme_icon(SNAME("ActionCopy"), SNAME("EditorIcons")), ED_SHORTCUT_AND_COMMAND("editor/copy_system_info", TTR("Copy System Info")), HELP_COPY_SYSTEM_INFO);
	help_menu->add_icon_shortcut(gui_base->get_theme_icon(SNAME("ExternalLink"), SNAME("EditorIcons")), ED_SHORTCUT_AND_COMMAND("editor/suggest_a_feature", TTR("Suggest a Feature")), HELP_SUGGEST_A_FEATURE);
	help_menu->add_icon_shortcut(gui_base->get_theme_icon(SNAME("ExternalLink"), SNAME("EditorIcons")), ED_SHORTCUT_AND_COMMAND("editor/send_docs_feedback", TTR("Send Docs Feedback")), HELP_SEND_DOCS_FEEDBACK);
	help_menu->add_icon_shortcut(gui_base->get_theme_icon(SNAME("ExternalLink"), SNAME("EditorIcons")), ED_SHORTCUT_AND_COMMAND("editor/community", TTR("Community")), HELP_COMMUNITY);
	help_menu->add_separator();
	if (!global_menu || !OS::get_singleton()->has_feature("macos")) {
		
		help_menu->add_icon_shortcut(gui_base->get_theme_icon(SNAME("Godot"), SNAME("EditorIcons")), ED_SHORTCUT_AND_COMMAND("editor/about", TTR("About Godot")), HELP_ABOUT);
	}
	help_menu->add_icon_shortcut(gui_base->get_theme_icon(SNAME("Heart"), SNAME("EditorIcons")), ED_SHORTCUT_AND_COMMAND("editor/support_development", TTR("Support Godot Development")), HELP_SUPPORT_GODOT_DEVELOPMENT);
	
	Control *right_spacer = memnew(Control);
	right_spacer->set_mouse_filter(Control::MOUSE_FILTER_PASS);
	right_spacer->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	title_bar->add_child(right_spacer);
	project_run_bar = memnew(EditorRunBar);
	title_bar->add_child(project_run_bar);
	project_run_bar->connect("play_pressed", callable_mp(this, &EditorNode::_project_run_started));
	project_run_bar->connect("stop_pressed", callable_mp(this, &EditorNode::_project_run_stopped));
	HBoxContainer *right_menu_hb = memnew(HBoxContainer);
	title_bar->add_child(right_menu_hb);
	renderer = memnew(OptionButton);
	renderer->set_visible(true);
	renderer->set_flat(true);
	renderer->set_fit_to_longest_item(false);
	renderer->set_focus_mode(Control::FOCUS_NONE);
	renderer->connect("item_selected", callable_mp(this, &EditorNode::_renderer_selected));
	renderer->add_theme_font_override("font", gui_base->get_theme_font(SNAME("bold"), SNAME("EditorFonts")));
	renderer->add_theme_font_size_override("font_size", gui_base->get_theme_font_size(SNAME("bold_size"), SNAME("EditorFonts")));
	renderer->set_tooltip_text(TTR("Choose a renderer."));