### 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
if (uniform.repeat != REPEAT_DEFAULT) {
									if (uniform.repeat == new_repeat) {
										_set_error(vformat(RTR("Duplicated repeat mode: '%s'."), get_texture_repeat_name(new_repeat)));
									} else {
										_set_error(vformat(RTR("Redefinition of repeat mode: '%s'. The repeat mode has already been set to '%s'."), get_texture_repeat_name(new_repeat), get_texture_repeat_name(uniform.repeat)));
									}
									return ERR_PARSE_ERROR;
								} else {
									uniform.repeat = new_repeat;
									current_uniform_repeat = new_repeat;
								}
							}
							tk = _get_token();
						} while (tk.type == TK_COMMA);
					}
					if (uniform_scope == ShaderNode::Uniform::SCOPE_INSTANCE) {
						if (custom_instance_index >= 0) {
							uniform.instance_index = custom_instance_index;
						} else {
							uniform.instance_index = instance_index++;
							if (instance_index > MAX_INSTANCE_UNIFORM_INDICES) {
								_set_error(vformat(RTR("Too many '%s' uniforms in shader, maximum supported is %d."), "instance", MAX_INSTANCE_UNIFORM_INDICES));
								return ERR_PARSE_ERROR;
							}
						}
					}
					
					if (tk.type == TK_OP_ASSIGN) {
						if (uniform.array_size > 0) {
							_set_error(RTR("Setting default values to uniform arrays is not supported."));