### 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
}
				} else {
					if (tk.type != TK_SEMICOLON) {
						if (current_uniform_group_name.is_empty()) {
							_set_error(RTR("Expected an uniform group identifier."));
						} else {
							_set_error(RTR("Expected an uniform group identifier or `;`."));
						}
						return ERR_PARSE_ERROR;
					} else if (current_uniform_group_name.is_empty()) {
						_set_error(RTR("Group needs to be opened before."));
						return ERR_PARSE_ERROR;
					} else {
						current_uniform_group_name = "";
						current_uniform_subgroup_name = "";
					}
				}
			} break;
			case TK_SHADER_TYPE: {
				_set_error(RTR("Shader type is already defined."));
				return ERR_PARSE_ERROR;
			} break;
			default: {
				
				bool is_constant = false;
				bool is_struct = false;
				StringName struct_name;
				DataPrecision precision = PRECISION_DEFAULT;
				DataType type;
				StringName name;