### 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
switch (p_interpolation) {
		case INTERPOLATION_FLAT:
			return "flat";
		case INTERPOLATION_SMOOTH:
			return "smooth";
		default:
			break;
	}
	return "";
}
String ShaderLanguage::get_datatype_name(DataType p_type) {
	switch (p_type) {
		case TYPE_VOID:
			return "void";
		case TYPE_BOOL:
			return "bool";
		case TYPE_BVEC2:
			return "bvec2";
		case TYPE_BVEC3:
			return "bvec3";
		case TYPE_BVEC4:
			return "bvec4";