### 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)

fit_child_in_rect(c, rect);
				right_child_rect = rect;
			}
			if (bottom_editor) {
				fit_child_in_rect(bottom_editor, bottom_rect);
				bottom_child_rect = bottom_rect;
			}
			queue_redraw(); 
		} break;
		case NOTIFICATION_DRAW: {
			Ref<Font> font = get_theme_font(SNAME("font"), SNAME("Tree"));
			int font_size = get_theme_font_size(SNAME("font_size"), SNAME("Tree"));
			bool rtl = is_layout_rtl();
			Size2 size = get_size();
			if (bottom_editor) {
				size.height = bottom_editor->get_offset(SIDE_TOP) - get_theme_constant(SNAME("v_separation"));
			} else if (label_reference) {
				size.height = label_reference->get_size().height;
			}
			Ref<StyleBox> sb = get_theme_stylebox(selected ? SNAME("bg_selected") : SNAME("bg"));
			draw_style_box(sb, Rect2(Vector2(), size));
			Ref<StyleBox> bg_stylebox = get_theme_stylebox(SNAME("child_bg"));
			if (draw_top_bg && right_child_rect != Rect2()) {
				draw_style_box(bg_stylebox, right_child_rect);
			}
			if (bottom_child_rect != Rect2()) {
				draw_style_box(bg_stylebox, bottom_child_rect);
			}
			Color color;
			if (draw_warning) {