Some user opcode handler actually gets called when JIT is used, so do not disable JIT even if these user opcode handlers were registered, just ignore them.
ZEND_EXIT can help Swoole to detect exit/die operation and exit from the current coroutine and record exit_status correctly.
ZEND_*_SILENCE can help Swoole to switch EG(error_reporting) to keep the right behavior when using the error control operator.
So we ignore ZEND_EXIT, ZEND_BEGIN_SILENCE, ZEND_END_SILENCE in JIT check here.
Closes GH-6640.