### Godot version

4.0.dev(2fdaf2919c03ab50f971f2d51616d4ee329d29af)

### System information

any

### Issue description

AnimationPlayer is unintentionally hidden.

https://user-images.githubusercontent.com/61938263/217088704-c1ad44d6-ef7b-4b10-b351-f9f9fa166e39.mp4


### Steps to reproduce

Select AnimationTree -> Select AnimationPlayer

### Minimal reproduction project

N/A
if (p_editor->has_main_screen()) {
		Button *tb = memnew(Button);
		tb->set_flat(true);
		tb->set_toggle_mode(true);
		tb->connect("pressed", callable_mp(singleton, &EditorNode::editor_select).bind(singleton->main_editor_buttons.size()));
		tb->set_name(p_editor->get_name());
		tb->set_text(p_editor->get_name());
		Ref<Texture2D> icon = p_editor->get_icon();
		if (icon.is_valid()) {
			tb->set_icon(icon);
			
			icon->connect("changed", callable_mp((Control *)tb, &Control::update_minimum_size));
		} else if (singleton->gui_base->has_theme_icon(p_editor->get_name(), SNAME("EditorIcons"))) {
			tb->set_icon(singleton->gui_base->get_theme_icon(p_editor->get_name(), SNAME("EditorIcons")));
		}
		tb->add_theme_font_override("font", singleton->gui_base->get_theme_font(SNAME("main_button_font"), SNAME("EditorFonts")));
		tb->add_theme_font_size_override("font_size", singleton->gui_base->get_theme_font_size(SNAME("main_button_font_size"), SNAME("EditorFonts")));
		singleton->main_editor_buttons.push_back(tb);
		singleton->main_editor_button_hb->add_child(tb);
		singleton->editor_table.push_back(p_editor);
		singleton->distraction_free->move_to_front();
	}
	singleton->editor_data.add_editor_plugin(p_editor);
	singleton->add_child(p_editor);
	if (p_config_changed) {
		p_editor->enable_plugin();
	}
}
void EditorNode::remove_editor_plugin(EditorPlugin *p_editor, bool p_config_changed) {