Support seal-methods/seal-properties as shorthand for psalm-seal-methods

[TysonAndre]

Having a syntax that wasn't specific to Psalm would be a better indication that the user wants the comment to be interpreted that way in other IDEs or analyzers.

src/Psalm/Internal/Analyzer/CommentAnalyzer.php would need to be changed.

Phan's latest releases support @seal-methods/@seal-properties.

[muglug]

The behaviour changed in the most recent version so that any time @property or @mixin is given, @psalm-seal-properties is assumed (ditto for @method), but I'm happy to also support @seal-properties/@seal-methods.

[TysonAndre]

I know - that makes it less important.

This may help if a class defines __get() to throw if it gets called but doesn't define magic properties, but this is relatively uncommon.

[weirdan]

Assumed fixed in #10344