NarrowPublicClassMethodParamTypeRule: conflicts with explicitly nullable types in PHP 8.4

[mbolli]

PHP 8.4 deprecates implicitly nullable types:
https://wiki.php.net/rfc/deprecate-implicitly-nullable-types

Which means to set a default value we have to explicitly allow null or ?type:

public function foo(?bool $dryRun = true) {}

Which could lead to this error:

Parameters should have "bool" types as the only types passed to this method