Follow up of DateTimeException RFC

Hi,

There was an RFC about more appropriate date exceptions
https://wiki.php.net/rfc/datetime-exceptions
implemented in
https://github.com/php/php-src/commit/66a1a911f1d6cd4b89c0bb5577fa77f1d6a2cb96

Looking at PHP example, it updated method return types like

• Datetime::modify
• DatetimeImmutable::modify
• DateInterval::createFromDateString

https://3v4l.org/iSPL9

These methods doesn't seem to return false anymore, but the PHP stub wasn't
updated so the reflection class still consider false as a valid return type
https://3v4l.org/IZXbp.

Is there still case where such method can return FALSE or should we update
the signature of these methods (and maybe some others) ?

Thanks.