[php-src] Issue #12863: BackedEnum::from() and BackedEnum::tryFrom() incorrect param typing

Issue: https://github.com/php/php-src/issues/12863 Author: jack-worman ### Description The following code (https://3v4l.org/o5uHL#v8.3.0): ```php <?php declare(strict_types=1); enum IntBacked: int { case One = 1; } var_export(IntBacked::tryFrom('bogus')); ``` Resulted in this output: ``` Fatal error: Uncaught TypeError: IntBacked::tryFrom(): Argument #1 ($value) must be of type int, string given in /in/XN86X:9 Stack trace: #0 /in/XN86X(9): IntBacked::tryFrom('bogus') #1 {main} thrown in /in/XN86X on line 9 Process exited with code 255. ``` But I expected this output instead: ``` NULL ``` # Explanation: The typing for BackedEnum is declared as: ```php interface BackedEnum extends UnitEnum { public static function from(int|string $value): static; public static function tryFrom(int|string $value): ?static; } ``` but this is clearly wrong because int backed enums only allow int $value's and string backed enums only allow string $value's. I think the real typing should match BackedEnum exactly. I don't see the downside in doing this. Example expected behavior: ```php <?php declare(strict_types=1); enum IntBacked: int { case One = 1; } enum StringBacked: string { case One = 'one'; } var_export(IntBacked::from(1)); // IntBacked::One var_export(IntBacked::from('1')); // Fatal error: Uncaught ValueError: "1" is not a valid backing value for enum "IntBacked" var_export(IntBacked::from('bogus')); // Fatal error: Uncaught ValueError: "bogus" is not a valid backing value for enum "IntBacked" var_export(IntBacked::tryFrom(1)); // IntBacked::One var_export(IntBacked::tryFrom('1')); // NULL var_export(IntBacked::tryFrom('bogus')); // NULL ``` ### PHP Version >= 8.1.0 ### Operating System _No response_