fix pdo exception when rollbacking without active transaction (#46017)

Author: khalyomede

src/Illuminate/Database/Concerns/ManagesTransactions.php

@@ -290,7 +290,11 @@ public function rollBack($toLevel = null)
     protected function performRollBack($toLevel)
     {
         if ($toLevel == 0) {
-            $this->getPdo()->rollBack();
+            $pdo = $this->getPdo();
+
+            if ($pdo->inTransaction()) {
+                $pdo->rollBack();
+            }
         } elseif ($this->queryGrammar->supportsSavepoints()) {
             $this->getPdo()->exec(
                 $this->queryGrammar->compileSavepointRollBack('trans'.($toLevel + 1))