[php-src] Issue #11908: PHP > 8.1 fails to detect Māori macrons

Issue: https://github.com/php/php-src/issues/11908 Author: RoSk0 ### Description The following code: ```php <?php $str = 'Total%20M%C4%81ori%2C31.5%2C33.3%2C31.8%2C33%2C36.4%2C33.2%2C33.2'; $rawstr = rawurldecode($str); var_dump( mb_detect_encoding($rawstr, ['UTF-8', 'ISO-8859-1', 'WINDOWS-1251']), mb_detect_encoding($rawstr, ['ISO-8859-1', 'WINDOWS-1251', 'UTF-8']), mb_detect_encoding($rawstr, ['WINDOWS-1251', 'UTF-8', 'ISO-8859-1']), mb_check_encoding($rawstr, 'ISO-8859-1'), mb_check_encoding($rawstr, 'UTF-8'), mb_check_encoding($rawstr, 'WINDOWS-1251'), ); ``` https://3v4l.org/jYDqY Resulted in this output: ``` string(12) "Windows-1251" string(12) "Windows-1251" string(12) "Windows-1251" bool(true) bool(true) bool(true) ``` But I expected this output instead: ``` string(5) "UTF-8" string(5) "UTF-8" string(5) "UTF-8" bool(false) bool(true) bool(false) ``` ## Related issues - https://github.com/php/php-src/issues/10192 - https://github.com/php/php-src/issues/7871 - https://github.com/php/php-src/pull/8439 - https://github.com/php/php-src/issues/10481 - https://github.com/php/php-src/issues/8279 ### PHP Version PHP 8.1.22 ### Operating System _No response_