profile test: Have displayInProfileSummary default to false, not true

This is the default when someone actually creates a custom profile
field, so the more realistic default for test data.

Author: gnprice

test/widgets/profile_test.dart

@@ -84,7 +84,7 @@ CustomProfileField mkCustomProfileField(
     name: 'field$id',
     hint: 'hint$id',
     fieldData: fieldData ?? '',
-    displayInProfileSummary: displayInProfileSummary ?? true,
+    displayInProfileSummary: displayInProfileSummary ?? false,
   );
 }