### 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)
if (p_viewport->render_buffers.is_valid()) {
		if (p_viewport->size.width == 0 || p_viewport->size.height == 0) {
			p_viewport->render_buffers.unref();
		} else {
			float scaling_3d_scale = p_viewport->scaling_3d_scale;
			RS::ViewportScaling3DMode scaling_3d_mode = p_viewport->scaling_3d_mode;
			if ((scaling_3d_mode == RS::VIEWPORT_SCALING_3D_MODE_FSR) && (scaling_3d_scale > 1.0)) {
				
				
				scaling_3d_mode = RS::VIEWPORT_SCALING_3D_MODE_BILINEAR;
			}
			if ((scaling_3d_mode == RS::VIEWPORT_SCALING_3D_MODE_FSR) && !p_viewport->fsr_enabled) {
				
				
				WARN_PRINT_ONCE("FSR 1.0 3D resolution scaling is not available. Falling back to bilinear 3D resolution scaling.");
				scaling_3d_mode = RS::VIEWPORT_SCALING_3D_MODE_BILINEAR;
			}
			if (scaling_3d_scale == 1.0) {
				scaling_3d_mode = RS::VIEWPORT_SCALING_3D_MODE_OFF;
			}
			int width;
			int height;
			int render_width;
			int render_height;
			switch (scaling_3d_mode) {
				case RS::VIEWPORT_SCALING_3D_MODE_BILINEAR: