[php-src] Issue #11533: inconsitent deprecation message with required paramteres and explizit nullable

Issue: https://github.com/php/php-src/issues/11533 Author: verfriemelt-dot-org ### Description The following code: ```php <?php function foo( int $a, int $b = null, int $c ) {} function bar( int $a, ?int $b = null, int $c ) {} ``` Resulted in this output: ``` Deprecated: Optional parameter $b declared before required parameter $c is implicitly treated as a required parameter in /tmp/preview on line 9 ``` But I expected this output instead: ``` Deprecated: Optional parameter $b declared before required parameter $c is implicitly treated as a required parameter in /tmp/preview on line 3 Deprecated: Optional parameter $b declared before required parameter $c is implicitly treated as a required parameter in /tmp/preview on line 9 ``` both functions have the same implicit $b paramter due to $c beeing required, shouldn't both then trigger the deprecation? ### PHP Version PHP 8.2.7 ### Operating System _No response_