[php-src] Issue #7850: Longer object names in stack trace dump

Issue: https://github.com/php/php-src/issues/7850 Author: lubosdz ### Description Hi, please would it be possible to dump longer object names in stack dump e.g. when exception occurs? I mean PRICE_TOTAL_TPL... in following sample dump: ~~~ Stack trace: #0 D:\xpdf\app\components\XpdfFieldInput.php(224): eval() #1 D:\xpdf\app\components\XpdfProcessor.php(1795): XpdfFieldInput->evalForm(Object(XpdfProcessor), 'PRICE_TOTAL_TPL...') #2 D:\xpdf\app\components\XpdfProcessor.php(2454): XpdfProcessor->evaluateForms() ..... ~~~ Currently it dumps **only 15 chars**, which makes it difficult to trace back if more similarly named object e.g. PRICE_TOTAL_TPL_WITH_VAT or PRICE_TOTAL_TPL_WITHOUT_VAT or PRICE_TOTAL_TPL_SUBTOTAL etc. Could it be like increased to 30 chars - or even more - for PHP 8.X ? I apologize that I am not able to make PR since i am not C guy neither understand complex PHP-SRC :-| Thank you for any feedback.