fix: don't store SortByInternal in db

SortByInternalDifficulty/MU3.User/patch_UserDetail.cs

@@ -0,0 +1,20 @@
+using MU3.Client;
+using MU3.DB;
+
+namespace MU3.User;
+class patch_UserDetail: UserDetail {
+    public extern void orig_copyTo(UserData userDetail);
+    public new void copyTo(UserData userDetail) {
+        orig_copyTo(userDetail);
+
+        // Attempting to use a profile with InternalLevel sorting enabled
+        // causes unpatched clients to crash thanks to enormous incompetence
+        // of Sxga's interns. So, unfortunately, this value has to be discarded.
+        // See:
+        // * MusicSelectViewDataList._sort1 set
+        // * UserDetail.copyFrom()
+        if(userDetail.tabSetting == (int)patch_MusicSort1ID.InternalLevel) {
+            userDetail.tabSetting = (int)patch_MusicSort1ID.Level;
+        }
+    }
+}