### 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 (tk.type == TK_BRACKET_OPEN) {
									Error error = _parse_array_size(nullptr, constants, true, nullptr, &array_size, nullptr);
									if (error != OK) {
										return error;
									}
									fixed_array_size = true;
									tk = _get_token();
								}
							}
							if (tk.type != TK_IDENTIFIER) {
								_set_error(RTR("Expected an identifier."));
								return ERR_PARSE_ERROR;
							}
							MemberNode *member = alloc_node<MemberNode>();
							member->precision = precision;
							member->datatype = type;
							member->struct_name = struct_name;
							member->name = tk.text;
							member->array_size = array_size;
							if (member_names.has(member->name)) {
								_set_redefinition_error(String(member->name));
								return ERR_PARSE_ERROR;
							}
							member_names.insert(member->name);
							tk = _get_token();
							if (tk.type == TK_BRACKET_OPEN) {
								Error error = _parse_array_size(nullptr, constants, true, nullptr, &member->array_size, nullptr);
								if (error != OK) {
									return error;
								}