Replace optional chaining with the traditional way

Co-authored-by: Bill Thornton <thornbill@users.noreply.github.com>

src/apps/stable/routes/user/userprofile.tsx

@@ -102,7 +102,7 @@ const UserProfile: FunctionComponent = () => {
             const target = evt.target as HTMLInputElement;
             const file = (target.files as FileList)[0];
 
-            if (!/image.*/.exec(file?.type)) {
+            if (!file || !/image.*/.exec(file.type)) {
                 return false;
             }