### Godot version

4.0.beta16

### System information

Windows 10 Pro x64, GLES3, RTX 3080 Ti (528.02)

### Issue description

In Compatibility/GLES3 back-end, shaders which use a uniform to get the normal roughness buffer cannot compile. For example, the shader:
```glsl
shader_type spatial;

uniform sampler2D normal_roughness_texture : hint_normal_roughness_texture;

void fragment() {
    vec4 sample = texture(normal_roughness_texture, UV);
}
```
results in an error in the output:
```
  drivers/gles3/shader_gles3.cpp:242 - SceneShaderGLES3: Fragment shader compilation failed:
  0(890) : error C1503: undefined variable "normal_roughness_buffer"
  
  drivers/gles3/shader_gles3.cpp:342 - Method/function failed.
```

If I switch over to the Mobile or Forward+ backends, there is no shader compilation error.

### Steps to reproduce

Open the attached reproduction in the 4.0.beta16 editor.

When the scene is opened, the error is produced automatically:
1. Open `scene.tscn`
2. Open Output to review error

When the scene is saved with any changes made to the shader, the same error is also produced:
1. Open `scene.tscn`
2. Open `example.gdshader` in the shader editor.
3. Make a compile-able change to the shader.
4. Save the scene
5. Open Output to review the error

### Minimal reproduction project

[NormalRoughnessTexture_GLES3_Error.zip](https://github.com/godotengine/godot/files/10534253/NormalRoughnessTexture_GLES3_Error.zip)

for (const int &F : E.value) {
						if (!_propagate_function_call_sampler_uniform_settings(E.key, F, p_filter, p_repeat)) {
							return false;
						}
					}
				}
				return true;
			}
		}
	}
	ERR_FAIL_V(false); 
}
bool ShaderLanguage::_propagate_function_call_sampler_builtin_reference(StringName p_name, int p_argument, const StringName &p_builtin) {
	for (int i = 0; i < shader->functions.size(); i++) {
		if (shader->functions[i].name == p_name) {
			ERR_FAIL_INDEX_V(p_argument, shader->functions[i].function->arguments.size(), false);
			FunctionNode::Argument *arg = &shader->functions[i].function->arguments.write[p_argument];
			if (arg->tex_argument_check) {
				_set_error(vformat(RTR("Sampler argument %d of function '%s' called more than once using both built-ins and uniform textures, this is not supported (use either one or the other)."), p_argument, String(p_name)));
				return false;
			} else if (arg->tex_builtin_check) {
				
				if (arg->tex_builtin == p_builtin) {
					return true;
				} else {
					_set_error(vformat(RTR("Sampler argument %d of function '%s' called more than once using different built-ins. Only calling with the same built-in is supported."), p_argument, String(p_name)));
					return false;
				}
			} else {
				arg->tex_builtin_check = true;