### Godot version

v4.0.beta9.official [e780dc332]

### System information

macOS Ventura 13.0.1 (Intel), Radeon Pro 580 8 GB

### Issue description

When setting the size of a SubViewport (that is inside the corresponding SubViewportContainer) to zero, the editor crashes instantly.

**But it only happens when I set the size of the SubViewport by sliding the values.**

You can see what happens in this video:


https://user-images.githubusercontent.com/91340577/209363880-503d3dff-80e1-4e9e-bb57-d059fdbfeed0.mp4

At the end of the video you can see the crash message of macOS reading: _Godot quit unexpectedly._

If I write the number zero (or any negative) to the values of the SubViewport size, the crash doesn't happens.

### Steps to reproduce

1. Add a SubViewportContainer
2. Add a SubViewport as a child of the SubViewportContainer
3. Set the size of the SubViewport to zero **by sliding** the X or the Y value.

### Minimal reproduction project

1. Open the project
2. Go to the Control.tscn scene
3. Select the SubViewport node
4. Slide the X or Y values of the size to zero

[SubViewportCrash.zip](https://github.com/godotengine/godot/files/10296101/SubViewportCrash.zip)
} else {
			RSG::texture_storage->render_target_set_override(vp->render_target, RID(), RID(), RID());
			RSG::scene->set_debug_draw_mode(vp->debug_draw);
			
			_draw_viewport(vp);
			if (vp->viewport_to_screen != DisplayServer::INVALID_WINDOW_ID && (!vp->viewport_render_direct_to_screen || !RSG::rasterizer->is_low_end())) {
				
				BlitToScreen blit;
				blit.render_target = vp->render_target;
				if (vp->viewport_to_screen_rect != Rect2()) {
					blit.dst_rect = vp->viewport_to_screen_rect;
				} else {
					blit.dst_rect.position = Vector2();
					blit.dst_rect.size = vp->size;
				}
				if (!blit_to_screen_list.has(vp->viewport_to_screen)) {
					blit_to_screen_list[vp->viewport_to_screen] = Vector<BlitToScreen>();
				}
				if (OS::get_singleton()->get_current_rendering_driver_name() == "opengl3") {
					Vector<BlitToScreen> blit_to_screen_vec;
					blit_to_screen_vec.push_back(blit);
					RSG::rasterizer->blit_render_targets_to_screen(vp->viewport_to_screen, blit_to_screen_vec.ptr(), 1);
					RSG::rasterizer->end_frame(true);
				} else {
					blit_to_screen_list[vp->viewport_to_screen].push_back(blit);
				}
			}
		}
		if (vp->update_mode == RS::VIEWPORT_UPDATE_ONCE) {
			vp->update_mode = RS::VIEWPORT_UPDATE_DISABLED;