Is pronouncing "na'budu" in Al-Fatihah with qalaqalah of the "dal" and without dammah considered one of the errors that distort the meaning?

If you pause on the letter 'dal' in the word "na‘budu" (نعبد) in Surat Al-Fatihah, that is not an error, because a vowelled letter is paused upon with a sukoon. However, if you vocalize it with a sukoon during continuous recitation, you have then deviated from the correct recitation. Nevertheless, this does not invalidate the prayer because the meaning is not distorted, and indeed, a shadhdh (anomalous) reading with the 'dal' vocalized with a sukoon has been transmitted. However, it is not permissible to recite with a shadhdh reading, neither in prayer nor otherwise, because it is not a continuously transmitted (mutawatir) Quranic text. The jurists have agreed upon the necessity of seeking repentance from anyone who recites with a shadhdh reading, and Muslims have unanimously agreed that it is impermissible to recite with it.