### 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)

}
					param_name = tk.text;
					ShaderLanguage::IdentifierType itype;
					if (_find_identifier(func_node->body, false, builtins, param_name, (ShaderLanguage::DataType *)nullptr, &itype)) {
						if (itype != IDENTIFIER_FUNCTION) {
							_set_redefinition_error(String(param_name));
							return ERR_PARSE_ERROR;
						}
					}
					if (has_builtin(p_functions, param_name)) {
						_set_redefinition_error(String(param_name));
						return ERR_PARSE_ERROR;
					}
					FunctionNode::Argument arg;
					arg.type = param_type;
					arg.name = param_name;
					arg.type_str = param_struct_name;
					arg.precision = param_precision;
					arg.qualifier = param_qualifier;
					arg.tex_argument_check = false;
					arg.tex_builtin_check = false;
					arg.tex_argument_filter = FILTER_DEFAULT;
					arg.tex_argument_repeat = REPEAT_DEFAULT;
					arg.is_const = param_is_const;
					tk = _get_token();
					if (tk.type == TK_BRACKET_OPEN) {
						Error error = _parse_array_size(nullptr, constants, true, nullptr, &arg_array_size, nullptr);
						if (error != OK) {
							return error;
						}