### 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
}
#endif 
						struct_dt = true;
					}
					if (!is_token_datatype(tk.type) && !struct_dt) {
						_set_error(RTR("Expected data type."));
						return ERR_PARSE_ERROR;
					} else {
						type = struct_dt ? TYPE_STRUCT : get_token_datatype(tk.type);
						if (precision != PRECISION_DEFAULT && _validate_precision(type, precision) != OK) {
							return ERR_PARSE_ERROR;
						}
						if (type == TYPE_VOID || is_sampler_type(type)) {
							_set_error(vformat(RTR("A '%s' data type is not allowed here."), get_datatype_name(type)));
							return ERR_PARSE_ERROR;
						}
#ifdef DEBUG_ENABLED
						keyword_completion_context = CF_UNSPECIFIED;
#endif 
						bool first = true;
						bool fixed_array_size = false;
						int array_size = 0;
						do {
							tk = _get_token();
							if (first) {
								first = false;
								if (tk.type != TK_IDENTIFIER && tk.type != TK_BRACKET_OPEN) {
									_set_error(RTR("Expected an identifier or '['."));
									return ERR_PARSE_ERROR;
								}