Are there any prophetic hadiths about the virtues of Surat Maryam, especially concerning its recitation in a dream, and is what was narrated from Aisha and Ja'far al-Sadiq regarding that authentic?

There is no authentic hadith concerning the virtue of reciting Surat Maryam. The hadith narrated from Ubayy ibn Ka'b regarding this is false and fabricated. What is mentioned, that reciting Surat Maryam in a dream relieves worries or makes its reciter among the prophets, is false talk with no basis. A person is not rewarded for reciting the Qur'an in a dream, because reward is for righteous deeds performed in wakefulness. However, seeing oneself recite the Qur'an in a dream is a good vision that brings glad tidings and encourages righteous action.