The closest hadith that I could find in Musannaf Ibn Abi Shaiba is hadith 23479, not hadith 23945:
حدثنا أبو بكر قال: حدثنا ابن نمير، قال: أخبرنا هشام بن عروة، عن أبيه، عن عائشة: أَنَّهَا كَانَتْ تَأْمُرُ مِنَ الدُّوَّامِ أَوِ الدُّوَّارِ بِسَبْعِ تَمَرَاتِ عَجْوَةٍ فِي سَبْعِ غَدَوَاتٍ عَلَى الرِّيقِ
NOTE. My own translation, so treat with care.
Narrated by Abu Bakr who said: I was told by Ibn Numair who said: Hishām ibn 'Urwa informed me that his father informed him through 'Ā'isha: "She ['Ā'isha] used to order for vertigo or dizziness seven 'ajwah dates for seven days to have them first thing [on an empty stomach]."
— Musannaf Ibn Abi Shaiba, Vol. 5, pp. 37, Hadith 23479
As per Anīs as-Sāri Takhrīj Ahādīth al-Bukhāri Vol. 11, pp. 1229, the hadith as attributed to 'Ā'isha (mawqūf) is authentic.
For your information, hadith 23945 is about a different topic and I doubt this is the one you are looking for:
حدثنا أبو بكر قال: حدثنا يزيد بن هارون، عن حماد بن سلمة، عن علي بن زيد، عن ربيعة بن النابغة، عن أبيه، عن علي، عن النبي صلى الله عليه وسلم قال كُنْتُ نَهَيْتُكُمْ عَنْ هَذِهِ الْأَوْعِيَةِ فَاشْرَبُوا فِيهَا، وَاجْتَنِبُوا كُلَّ مَا أَسْكَرَ
NOTE. My own translation, so treat with care.
Narrated by Abu Bakr who said: I was told by Yazīd ibn Harūn through Hammād ibn Salama through 'Ali ibn Zaid through Rabī'a ibn an-Nābigha through his father through 'Ali that the Prophet ﷺ said: "I had previously forbidden you from [using] these bowls; now you can drink in them but shun everything that intoxicates."
— Musannaf Ibn Abi Shaiba, Vol. 5, pp. 86, Hadith 23945