### Godot version

4.0.dev(dc3175e4cdb4e54e1c6200b6c4d07646eea95284)

### System information

Any

### Issue description

EditorPlugins that depend on the resources that Node has will not be visible when SubInspector is focused.

https://user-images.githubusercontent.com/61938263/210553656-86669f57-e41f-427e-a650-30630c27d850.mp4

This is caused by two problems:

The first is caused by implicit editor deletion in Node3D. This is fixed by #70907.

The other is due to a change in inspector update timing, which is regression by #68498. Revert PR #70909 will fix this issue, but if not, we will need to update SubInspectorEditor in the correct way.

### Steps to reproduce

Select Path3D or CollisionPolygon3D and open a SubInspector such as Script.

### Minimal reproduction project

[plugintest.zip](https://github.com/godotengine/godot/files/10343962/plugintest.zip)

Ref<Font> font = get_theme_font(SNAME("bold"), SNAME("EditorFonts"));
	int font_size = get_theme_font_size(SNAME("bold_size"), SNAME("EditorFonts"));
	int header_height = font->get_height(font_size);
	Ref<Texture2D> arrow = _get_arrow();
	if (arrow.is_valid()) {
		header_height = MAX(header_height, arrow->get_height());
	}
	header_height += get_theme_constant(SNAME("v_separation"), SNAME("Tree"));
	return header_height;
}
void EditorInspectorSection::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_THEME_CHANGED: {
			update_minimum_size();
		} break;
		case NOTIFICATION_SORT_CHILDREN: {
			if (!vbox_added) {
				return;
			}
			int inspector_margin = get_theme_constant(SNAME("inspector_margin"), SNAME("Editor"));
			int section_indent_size = get_theme_constant(SNAME("indent_size"), SNAME("EditorInspectorSection"));
			if (indent_depth > 0 && section_indent_size > 0) {
				inspector_margin += indent_depth * section_indent_size;
			}
			Ref<StyleBoxFlat> section_indent_style = get_theme_stylebox(SNAME("indent_box"), SNAME("EditorInspectorSection"));
			if (indent_depth > 0 && section_indent_style.is_valid()) {
				inspector_margin += section_indent_style->get_margin(SIDE_LEFT) + section_indent_style->get_margin(SIDE_RIGHT);
			}
			Size2 size = get_size() - Vector2(inspector_margin, 0);
			int header_height = _get_header_height();