GitHub Copilot suggested code for List.of type cast error.

GitHub Copilot is pretty AWESOME!!

Just taking a few minutes to express a little nuanced gratitude for the GitHub Copilot AI tool. Practically speaking, in working with Dart, when creating shallow copies of Lists and Maps, I recently learned a primary difference between .from() and .of(): Using .from() will yield runtime exceptions while using .of() will reveal any potential type