### 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)

arg->tex_builtin = p_builtin;
				for (KeyValue<StringName, HashSet<int>> &E : arg->tex_argument_connect) {
					for (const int &F : E.value) {
						if (!_propagate_function_call_sampler_builtin_reference(E.key, F, p_builtin)) {
							return false;
						}
					}
				}
				return true;
			}
		}
	}
	ERR_FAIL_V(false); 
}
Error ShaderLanguage::_parse_array_size(BlockNode *p_block, const FunctionInfo &p_function_info, bool p_forbid_unknown_size, Node **r_size_expression, int *r_array_size, bool *r_unknown_size) {
	bool error = false;
	if (r_array_size != nullptr && *r_array_size > 0) {
		error = true;
	}
	if (r_unknown_size != nullptr && *r_unknown_size) {
		error = true;
	}
	if (error) {
		_set_error(vformat(RTR("Array size is already defined.")));
		return ERR_PARSE_ERROR;
	}
	TkPos pos = _get_tkpos();
	Token tk = _get_token();
	if (tk.type == TK_BRACKET_CLOSE) {
		if (p_forbid_unknown_size) {