Bug fix

Fix a bug where the TextField cursor would jump to the end when adding a
new character at the beginning of the text. This was more noticeable when
editing.

Author: kafran

App/UnderstandingCoreData/Core Data/Item+CoreDataClass.swift

@@ -19,7 +19,8 @@ extension Item {
 //    }
 
     var nameString: String {
-        name ?? "Unknown Item"
+        get { name ?? "" }
+        set { name = newValue }
     }
 
     var itemHistory: [History] {

App/UnderstandingCoreData/Views/ItemDetailEditForm.swift

@@ -15,7 +15,7 @@ struct ItemDetailEditForm: View {
     var body: some View {
         Form {
             Section(header: Text("Item Info")) {
-                TextField("Name", text: .init($item.name, ""))
+                TextField("Name", text: $item.nameString)
                 ThemePicker(selection: $item.themeEnum)
             }
         }