### 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
String type_name = p_datatype_a == TYPE_STRUCT ? p_datatype_name_a : get_datatype_name(p_datatype_a);
		if (p_array_size_a > 0) {
			type_name += "[";
			type_name += itos(p_array_size_a);
			type_name += "]";
		}
		String type_name2 = p_datatype_b == TYPE_STRUCT ? p_datatype_name_b : get_datatype_name(p_datatype_b);
		if (p_array_size_b > 0) {
			type_name2 += "[";
			type_name2 += itos(p_array_size_b);
			type_name2 += "]";
		}
		_set_error(vformat(RTR("Invalid assignment of '%s' to '%s'."), type_name2, type_name));
	}
	return result;
}
bool ShaderLanguage::_compare_datatypes_in_nodes(Node *a, Node *b) {
	return _compare_datatypes(a->get_datatype(), a->get_datatype_name(), a->get_array_size(), b->get_datatype(), b->get_datatype_name(), b->get_array_size());
}
bool ShaderLanguage::_parse_function_arguments(BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_func, int *r_complete_arg) {
	TkPos pos = _get_tkpos();
	Token tk = _get_token();
	if (tk.type == TK_PARENTHESIS_CLOSE) {
		return true;
	}
	_set_tkpos(pos);
	while (true) {
		if (r_complete_arg) {
			pos = _get_tkpos();
			tk = _get_token();