### 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
_set_error(vformat(RTR("The '%s' qualifier is not supported for uniform arrays."), "SCOPE_INSTANCE"));
							return ERR_PARSE_ERROR;
						}
					}
					int custom_instance_index = -1;
					if (tk.type == TK_COLON) {
						completion_type = COMPLETION_HINT;
						completion_base = type;
						completion_base_array = uniform.array_size > 0;
						
						do {
							tk = _get_token();
							completion_line = tk.line;
							if (!is_token_hint(tk.type)) {
								_set_error(RTR("Expected valid type hint after ':'."));
								return ERR_PARSE_ERROR;
							}
							if (uniform.array_size > 0) {
								if (tk.type != TK_HINT_SOURCE_COLOR) {
									_set_error(RTR("This hint is not supported for uniform arrays."));
									return ERR_PARSE_ERROR;
								}
							}
							ShaderNode::Uniform::Hint new_hint = ShaderNode::Uniform::HINT_NONE;
							TextureFilter new_filter = FILTER_DEFAULT;
							TextureRepeat new_repeat = REPEAT_DEFAULT;
							switch (tk.type) {
								case TK_HINT_SOURCE_COLOR: {
									if (type != TYPE_VEC3 && type != TYPE_VEC4 && !is_sampler_type(type)) {
										_set_error(vformat(RTR("Source color hint is for '%s', '%s' or sampler types only."), "vec3", "vec4"));