[10.x] Fix DB::afterCommit() broken in tests using DatabaseTransactions (#50068)

* Add failing test case for test database transactions manager

* Fix transaction commit in test causing all callbacks to execute in transaction

Author: oprypkhantc

src/Illuminate/Database/DatabaseTransactionsManager.php

@@ -83,7 +83,8 @@ public function commit($connection, $levelBeingCommitted, $newTransactionLevel)
         // shouldn't be any pending transactions, but going to clear them here anyways just
         // in case. This method could be refactored to receive a level in the future too.
         $this->pendingTransactions = $this->pendingTransactions->reject(
-            fn ($transaction) => $transaction->connection === $connection
+            fn ($transaction) => $transaction->connection === $connection &&
+                $transaction->level >= $levelBeingCommitted
         )->values();
 
         [$forThisConnection, $forOtherConnections] = $this->committedTransactions->partition(

tests/Foundation/Testing/DatabaseTransactionsManagerTest.php

@@ -31,6 +31,23 @@ public function testItIgnoresTheBaseTransactionForCallbackApplicableTransactions
         $this->assertEquals(2, $manager->callbackApplicableTransactions()[0]->level);
     }
 
+    public function testCommittingDoesNotRemoveTheBasePendingTransaction()
+    {
+        $manager = new DatabaseTransactionsManager;
+
+        $manager->begin('foo', 1);
+
+        $manager->begin('foo', 2);
+        $manager->commit('foo', 2, 1);
+
+        $this->assertCount(0, $manager->callbackApplicableTransactions());
+
+        $manager->begin('foo', 2);
+
+        $this->assertCount(1, $manager->callbackApplicableTransactions());
+        $this->assertEquals(2, $manager->callbackApplicableTransactions()[0]->level);
+    }
+
     public function testItExecutesCallbacksForTheSecondTransaction()
     {
         $testObject = new TestingDatabaseTransactionsManagerTestObject();