### 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
lut_case = CASE_HEXA_PERIOD;
								} else if (symbol == 'e' && !hexa_found) {
									exponent_found = true;
									lut_case = CASE_EXPONENT;
								} else if (symbol == 'f' && !hexa_found) {
									if (!period_found && !exponent_found) {
										error = true;
									}
									float_suffix_found = true;
									end_suffix_found = true;
									lut_case = CASE_NONE;
								} else if (symbol == 'u') {
									uint_suffix_found = true;
									end_suffix_found = true;
									lut_case = CASE_NONE;
								} else if (symbol == '-' || symbol == '+') {
									if (exponent_found) {
										lut_case = CASE_SIGN_AFTER_EXPONENT;
									} else {
										break;
									}
								}
							} else if (!hexa_found || !is_hex_digit(symbol)) {
								if (is_ascii_identifier_char(symbol)) {
									error = true;
								} else {
									break;
								}
							}
						}