### 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 error;
									}
									if (is_unknown_size) {
										array_size2 = var.array_size;
									}
									tk = _get_token();
								} else {
									_set_expected_error("[");
									return ERR_PARSE_ERROR;
								}
								if (precision != precision2 || type != type2 || struct_name != struct_name2 || var.array_size != array_size2) {
									String from;
									if (precision2 != PRECISION_DEFAULT) {
										from += get_precision_name(precision2);
										from += " ";
									}
									if (type2 == TYPE_STRUCT) {
										from += struct_name2;
									} else {
										from += get_datatype_name(type2);
									}
									from += "[";
									from += itos(array_size2);
									from += "]'";
									String to;
									if (precision != PRECISION_DEFAULT) {
										to += get_precision_name(precision);
										to += " ";
									}
									if (type == TYPE_STRUCT) {