fix dynamic properties PHP 8.2

[krajcikondra]

Hi,

on php 8.2 I get errors like this:

Deprecated: Creation of dynamic property Ratchet\Server\IoConnection::$httpBuffer is deprecated

[SimonFrings]

@krajcikondra The test suite doesn't execute the tests with PHP 8.2 currently and we can't see if your changes are completely fixing the issue, but I am looking into that, see #1003 for more details. Once I get everything updated, we can come back to this one. Depending on how far I go with #1003, I might need to apply the same changes as you did, I'll keep you posted 👍

[PaulRotmann]

Hey! Thanks for this pull request 🙏

As part of our cleanup initiative (#1100), we're closing old PRs that have already been resolved. We've recently merged #1096 which implements the same idea, but turned out to be a bit more involved than initially anticipated.

If you have further improvements to suggest, feel free to open a new pull request. We appreciate your contributions and welcome any future enhancements. If you want to support Ratchet, please consider sponsoring our work! ❤️

Thanks again for your contribution.