Signal enumerator after reconnecting file provider domain

Signed-off-by: Claudio Cambra <claudio.cambra@nextcloud.com>

src/gui/macOS/fileproviderdomainmanager_mac.mm

@@ -356,6 +356,8 @@ class FileProviderDomainManager::Private {
 
                 qCDebug(lcMacFileProviderDomainManager) << "Successfully reconnected file provider domain: "
                                                         << fileProviderDomain.displayName;
+
+                signalEnumeratorChanged(account.get());
             }];
         };