Is it obligatory to name a female newborn "Shajar al-Durr" based on hearing a voice in a dream saying, "Indeed, Allah has blessed you with a daughter, so name her Shajar al-Durr," before knowing that the pregnancy was with a female, and what is the interpretation of this dream?

Interpreting dreams is not our specialty, and naming based on what is seen in a dream is not obligatory, because a dream does not obligate anything. However, there is no harm in naming someone "Shajarat al-Durr," as it is the name of a Muslim woman who held power and was mentioned by Ibn Kathir.