### 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
continue;
							} else {
								return ERR_PARSE_ERROR;
							}
						} else {
							return ERR_PARSE_ERROR;
						}
					}
					break;
				}
			}
		} else if (tk.type == TK_CF_CASE) {
			
			if (p_block && p_block->block_type == BlockNode::BLOCK_TYPE_CASE) {
				_set_tkpos(pos);
				return OK;
			}
			if (!p_block || (p_block->block_type != BlockNode::BLOCK_TYPE_SWITCH)) {
				_set_error(vformat(RTR("'%s' must be placed within a '%s' block."), "case", "switch"));
				return ERR_PARSE_ERROR;
			}
			tk = _get_token();
			int sign = 1;
			if (tk.type == TK_OP_SUB) {
				sign = -1;
				tk = _get_token();
			}
			Node *n = nullptr;
			if (!tk.is_integer_constant()) {
				bool correct_constant_expression = false;