### 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
return check_warnings;
}
void ShaderLanguage::set_warning_flags(uint32_t p_flags) {
	warning_flags = p_flags;
}
uint32_t ShaderLanguage::get_warning_flags() const {
	return warning_flags;
}
#endif 
Error ShaderLanguage::compile(const String &p_code, const ShaderCompileInfo &p_info) {
	clear();
	is_shader_inc = p_info.is_include;
	code = p_code;
	global_shader_uniform_get_type_func = p_info.global_shader_uniform_type_func;
	varying_function_names = p_info.varying_function_names;
	nodes = nullptr;
	shader = alloc_node<ShaderNode>();
	Error err = _parse_shader(p_info.functions, p_info.render_modes, p_info.shader_types);
#ifdef DEBUG_ENABLED
	if (check_warnings) {
		_check_warning_accums();
	}
#endif 
	if (err != OK) {
		return err;
	}
	return OK;
}
Error ShaderLanguage::complete(const String &p_code, const ShaderCompileInfo &p_info, List<ScriptLanguage::CodeCompletionOption> *r_options, String &r_call_hint) {