### Godot version

v4.0.beta17.official [c40020513]

### System information

Windows 11, OpenGL (Compatibility), RTX 2060 (31.0.15.2824)

### Issue description

I tried to make a blurred panel for a ui element with texturelod via shader:

```glsl
shader_type canvas_item;

uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_linear_mipmap_anisotropic;
uniform float blur_amount : hint_range(0.0, 5.0);

void fragment() {
	vec4 blurred = textureLod(SCREEN_TEXTURE, SCREEN_UV, blur_amount);
	COLOR = blurred;
}
```

but what I got instead is this:
![image](https://user-images.githubusercontent.com/72286622/217170426-49f6712d-47ef-4c53-b9f1-30d8ad868084.png)

vulkan renderer does not exhibit this issue:
![image](https://user-images.githubusercontent.com/72286622/217170565-a013c712-94f6-49d1-b9ec-091c28a7790b.png)


### Steps to reproduce

1. Add a TextureRect node
2. Add a Panel node to overlay the previously added node
3. Apply the blur shader to the panel node

### Minimal reproduction project

N/A
Texture *texture = texture_owner.get_or_null(p_texture);
	ERR_FAIL_COND_V(!texture, Ref<Image>());
#ifdef TOOLS_ENABLED
	if (texture->image_cache_2d.is_valid() && !texture->is_render_target) {
		return texture->image_cache_2d;
	}
#endif
#ifdef GLES_OVER_GL
	
	
	Vector<uint8_t> data;
	int data_size = Image::get_image_data_size(texture->alloc_width, texture->alloc_height, texture->real_format, texture->mipmaps > 1);
	data.resize(data_size * 2); 
	uint8_t *w = data.ptrw();
	glActiveTexture(GL_TEXTURE0);
	glBindTexture(texture->target, texture->tex_id);
	glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
	for (int i = 0; i < texture->mipmaps; i++) {
		int ofs = Image::get_image_mipmap_offset(texture->alloc_width, texture->alloc_height, texture->real_format, i);
		if (texture->compressed) {
			glPixelStorei(GL_PACK_ALIGNMENT, 4);
			glGetCompressedTexImage(texture->target, i, &w[ofs]);
		} else {
			glPixelStorei(GL_PACK_ALIGNMENT, 1);
			glGetTexImage(texture->target, i, texture->gl_format_cache, texture->gl_type_cache, &w[ofs]);
		}
	}
	data.resize(data_size);
	ERR_FAIL_COND_V(data.size() == 0, Ref<Image>());
	Ref<Image> image = Image::create_from_data(texture->width, texture->height, texture->mipmaps > 1, texture->real_format, data);