移除账号切换成功后的 Toast 提示。

切换完成后直接返回首页即可，无需额外弹窗确认。

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/Features/Profile/Views/AccountSwitchView.swift

@@ -217,7 +217,6 @@ struct AccountSwitchView: View {
                 )
             }
             appRouter.reset()
-            toastCenter.show("账号已切换")
             dismiss()
         } catch is CancellationError {
             return