php 8.3

Issue with php 8.3 I guess... ErrorException: Template error: [E_WARNING] Increment on type bool has no effect, this will change in the next major version of PHP src/XF/BbCode/Renderer/Html.php:296 #0 src/XF/BbCode/Renderer/Html.php(296): XF\Template\Templater->handleTemplateError(2...

This is just a small patch for PHP 8.3 compatibility issues that we've encountered so far. Notably, XF\BbCode\Renderer\Html attempts to increment a bool in a couple places, a stopSmilies and stopBreakConversion can be either bools or ints. It's not clear to me why they would ever need to be...