### 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
} else if (GETCHAR(0) == '-') {
					char_idx++;
					return _make_token(TK_OP_DECREMENT);
				}
				return _make_token(TK_OP_SUB);
			} break;
			case '%': {
				if (GETCHAR(0) == '=') {
					char_idx++;
					return _make_token(TK_OP_ASSIGN_MOD);
				}
				return _make_token(TK_OP_MOD);
			} break;
			case '@': {
				if (GETCHAR(0) == '@' && GETCHAR(1) == '>') {
					char_idx += 2;
					LocalVector<char32_t> incp;
					while (GETCHAR(0) != '\n') {
						incp.push_back(GETCHAR(0));
						char_idx++;
					}
					incp.push_back(0); 
					String include_path(incp.ptr());
					include_positions.write[include_positions.size() - 1].line = tk_line;
					FilePosition fp;
					fp.file = include_path;
					fp.line = 0;
					tk_line = 0;
					include_positions.push_back(fp);
				} else if (GETCHAR(0) == '@' && GETCHAR(1) == '<') {