### Godot version

v4.0.beta.custom_build [291add339]

### System information

Windows 10, Forward+, NVIDIA GeForce GTX 1050 Ti (31.0.15.1694)

### Issue description

I was testing if #69669 was solved by #70418, which it seemed to be. However, I got a wall of errors at the same time.

In the minimal reproduction project below in this Issue, I get errors when instantiating many of the same `GPUParticle2D` scene. In my earlier Godot 4 build (v4.0.beta.custom_build [2a04b18d3]) I did not get any errors (but got the occasional artifact as was my original issue in #69669).

I suspect the PR #70418 solved the artifact, but possibly introduced new bugs. However, I have not specifically built Godot with, and without the PR in question.

I believe this is the start and end of the errors - after which they repeat.
![wall_of_errors](https://user-images.githubusercontent.com/10490534/209046500-9813150c-d6e4-4a11-8e62-79d370d07009.png)

### Steps to reproduce

- Create a GPUParticle2D scene
- Instantiate the scene several times
- Observe the debugger get flooded with errors

### Minimal reproduction project

This project only instantiates default GPUParticle2D scenes with a default particle material.
[GPU_Particle_Creation_Bug.zip](https://github.com/godotengine/godot/files/10283416/GPU_Particle_Creation_Bug.zip)

ERR_FAIL_COND(p_render_buffers.is_null());
	Ref<RenderBufferDataForwardClustered> rb_data = p_render_buffers->get_custom_data(RB_SCOPE_FORWARD_CLUSTERED);
	ERR_FAIL_COND(!p_render_buffers->has_custom_data(RB_SCOPE_GI));
	Ref<RendererRD::GI::RenderBuffersGI> rbgi = p_render_buffers->get_custom_data(RB_SCOPE_GI);
	Ref<RendererRD::GI::SDFGI> sdfgi;
	if (p_render_buffers->has_custom_data(RB_SCOPE_SDFGI)) {
		sdfgi = p_render_buffers->get_custom_data(RB_SCOPE_SDFGI);
	}
	Size2i size = p_render_buffers->get_internal_size();
	float ratio = float(size.x) / float((size.x + size.y) / 2);
	uint32_t target_width = uint32_t(float(get_volumetric_fog_size()) * ratio);
	uint32_t target_height = uint32_t(float(get_volumetric_fog_size()) / ratio);
	if (p_render_buffers->has_custom_data(RB_SCOPE_FOG)) {
		Ref<RendererRD::Fog::VolumetricFog> fog = p_render_buffers->get_custom_data(RB_SCOPE_FOG);
		
		if (p_environment.is_null() || !environment_get_volumetric_fog_enabled(p_environment) || fog->width != target_width || fog->height != target_height || fog->depth != get_volumetric_fog_depth()) {
			p_render_buffers->set_custom_data(RB_SCOPE_FOG, Ref<RenderBufferCustomDataRD>());
		}
	}
	if (p_environment.is_null() || !environment_get_volumetric_fog_enabled(p_environment)) {
		
		return;
	}
	if (p_environment.is_valid() && environment_get_volumetric_fog_enabled(p_environment) && !p_render_buffers->has_custom_data(RB_SCOPE_FOG)) {
		
		Ref<RendererRD::Fog::VolumetricFog> fog;