Cherry-pick 272313@main (64a7397). https://bugs.webkit.org/show_bug.c…

…gi?id=266603

    Ensure NetworkStorageManager gets destroyed on the main thread
    https://bugs.webkit.org/show_bug.cgi?id=266603
    rdar://117839300

    Reviewed by Chris Dumez and Alex Christensen.

    Dispatch a task to main thread to release ref of NetworkStorageManager in stopReceivingMessageFromConnection, which may
    help fix the crash under IDBStorageRegistry::removeConnectionToClient in rdar://117839300.

    * Source/WebKit/NetworkProcess/storage/NetworkStorageManager.cpp:
    (WebKit::NetworkStorageManager::stopReceivingMessageFromConnection):

    Canonical link: https://commits.webkit.org/272313@main

Source/WebKit/NetworkProcess/storage/NetworkStorageManager.cpp

@@ -302,6 +302,8 @@ void NetworkStorageManager::stopReceivingMessageFromConnection(IPC::Connection&
             return shouldRemove;
         });
         m_temporaryBlobPathsByConnection.remove(connection);
+
+        RunLoop::main().dispatch([protectedThis = WTFMove(protectedThis)] { });
     });
 }