### 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)

ERR_FAIL_COND_V(p_func->op != OP_CALL && p_func->op != OP_CONSTRUCT, false);
	Vector<DataType> args;
	Vector<StringName> args2;
	Vector<int> args3;
	ERR_FAIL_COND_V(p_func->arguments[0]->type != Node::TYPE_VARIABLE, false);
	StringName name = static_cast<VariableNode *>(p_func->arguments[0])->name.operator String();
	for (int i = 1; i < p_func->arguments.size(); i++) {
		args.push_back(p_func->arguments[i]->get_datatype());
		args2.push_back(p_func->arguments[i]->get_datatype_name());
		args3.push_back(p_func->arguments[i]->get_array_size());
	}
	int argcount = args.size();
	if (p_function_info.stage_functions.has(name)) {
		
		const StageFunctionInfo &sf = p_function_info.stage_functions[name];
		if (argcount != sf.arguments.size()) {
			_set_error(vformat(RTR("Invalid number of arguments when calling stage function '%s', which expects %d arguments."), String(name), sf.arguments.size()));
			return false;
		}
		
		for (int i = 0; i < argcount; i++) {
			if (args[i] != sf.arguments[i].type) {