Is the addition of the word (Kareem) in the supplication "O Allah, verily You are Pardoning, Noble, You love to pardon, so pardon us" established and sound?

The word "Kareem" (Most Generous) was mentioned in Sunan al-Tirmidhi in the hadith narrated by Aisha, may Allah be pleased with her, regarding the supplication of Laylat al-Qadr: "Allahumma innaka afuwwun kareemun tuhibbul afwa fafu anni" (O Allah, indeed You are Pardoning, Most Generous, You love pardon, so pardon me). However, this word was not mentioned in the narrations of Imam Ahmad, An-Nasa'i, Ibn Majah, Al-Hakim, and others. Al-Albani pointed out that this addition is "an interpolation from some scribes or printers," due to its absence in other sources or even in some editions of Tirmidhi. He further confirmed this by stating that An-Nasa'i narrated the hadith through the same chain of transmission as Tirmidhi without this addition.