This ticket combines fixes for several Coverity issues for efficiency:
WT-12220: Uncaught exception in kv_transaction_guard::~kv_transaction_guard (138598, 138600)WT-12317: Unnecessary comparison against 0 (138614)WT-12578: operator<< for model::operation::any can throw an exception when valueless_by_exception (138723, 138723)
And also new defects: