### Godot version

4.0.beta14

### System information

windows 10, gles 3, nvidia graphics

### Issue description

SCREEN_TEXTURE  was dropped in beta 14. The suggested replacement is to use ```uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_linear_mipmaps;```, but filter_linear_mipmaps is not recognized as a valid shader type hint and a shader using it fails to compile.

### Steps to reproduce

Create a canvas item shader and use the filter_linear_mipmaps type hint with a sampler2D uniform.

### Minimal reproduction project

N/A
}
	} else {
		if (p_function_info.built_ins.has(p_identifier)) {
			if (r_data_type) {
				*r_data_type = p_function_info.built_ins[p_identifier].type;
			}
			if (r_is_const) {
				*r_is_const = p_function_info.built_ins[p_identifier].constant;
			}
			if (r_type) {
				*r_type = IDENTIFIER_BUILTIN_VAR;
			}
			return true;
		}
	}
	if (p_function_info.stage_functions.has(p_identifier)) {
		if (r_data_type) {
			*r_data_type = p_function_info.stage_functions[p_identifier].return_type;
		}
		if (r_is_const) {
			*r_is_const = true;
		}
		if (r_type) {
			*r_type = IDENTIFIER_FUNCTION;
		}
		return true;
	}
	FunctionNode *function = nullptr;
	while (p_block) {
		if (p_block->variables.has(p_identifier)) {