TF-2194 Update create new mailbox without pre-selected parent mailbox

(cherry picked from commit 84ca809fa37b8fd1bad4d370120ee7b825943aca)

lib/features/mailbox/presentation/mailbox_view.dart

@@ -249,7 +249,7 @@ class MailboxView extends BaseMailboxView {
                     colorFilter: AppColor.colorTextButton.asFilter(),
                     fit: BoxFit.fill),
                   tooltip: AppLocalizations.of(context).new_mailbox,
-                onTap: () => controller.goToCreateNewMailboxView(context)),
+                onTap: () => controller.goToCreateNewMailboxView(context, null)),
               ]),
             ]),
           ),

lib/features/mailbox/presentation/mailbox_view_web.dart

@@ -171,7 +171,7 @@ class MailboxView extends BaseMailboxView {
                                   colorFilter: AppColor.colorTextButton.asFilter(),
                                   fit: BoxFit.fill),
                                 tooltip: AppLocalizations.of(context).new_mailbox,
-                                onTap: () => controller.goToCreateNewMailboxView(context)),
+                                onTap: () => controller.goToCreateNewMailboxView(context, null)),
                           ],
                           )),
                     ]),