### 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
break;
								case ShaderNode::Varying::STAGE_FRAGMENT:
									if (current_function == varying_function_names.light) {
										var.stage = ShaderNode::Varying::STAGE_FRAGMENT_TO_LIGHT;
									}
									break;
								default:
									break;
							}
						}
						if ((var.stage != ShaderNode::Varying::STAGE_FRAGMENT && var.stage != ShaderNode::Varying::STAGE_FRAGMENT_TO_LIGHT) && var.type < TYPE_FLOAT && var.interpolation != INTERPOLATION_FLAT) {
							_set_tkpos(var.tkpos);
							_set_error(RTR("Varying with integer data type must be declared with `flat` interpolation qualifier."));
							return nullptr;
						}
					}
					if (ident_type == IDENTIFIER_FUNCTION) {
						_set_error(vformat(RTR("Can't use function as identifier: '%s'."), String(identifier)));
						return nullptr;
					}
					if (is_const) {
						last_type = IDENTIFIER_CONSTANT;
					} else {
						last_type = ident_type;
					}
					is_local = ident_type == IDENTIFIER_LOCAL_VAR || ident_type == IDENTIFIER_FUNCTION_ARGUMENT;
				}
				Node *index_expression = nullptr;
				Node *call_expression = nullptr;
				Node *assign_expression = nullptr;