### 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)

Vector2 offset = Vector2(is_layout_rtl() ? 0 : inspector_margin, header_height);
			for (int i = 0; i < get_child_count(); i++) {
				Control *c = Object::cast_to<Control>(get_child(i));
				if (!c) {
					continue;
				}
				if (c->is_set_as_top_level()) {
					continue;
				}
				fit_child_in_rect(c, Rect2(offset, size));
			}
		} break;
		case NOTIFICATION_DRAW: {
			int section_indent = 0;
			int section_indent_size = get_theme_constant(SNAME("indent_size"), SNAME("EditorInspectorSection"));
			if (indent_depth > 0 && section_indent_size > 0) {
				section_indent = 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()) {
				section_indent += section_indent_style->get_margin(SIDE_LEFT) + section_indent_style->get_margin(SIDE_RIGHT);
			}
			int header_width = get_size().width - section_indent;
			int header_offset_x = 0.0;
			bool rtl = is_layout_rtl();
			if (!rtl) {
				header_offset_x += section_indent;
			}
			
			int header_height = _get_header_height();