Disable clearing for Play store version

app/src/main/java/eu/faircode/email/ActivityBase.java

@@ -766,6 +766,8 @@ abstract class ActivityBase extends AppCompatActivity implements SharedPreferenc
         @Override
         public void onFragmentDestroyed(@NonNull FragmentManager fm, @NonNull Fragment f) {
             log(fm, f, "onFragmentDestroyed");
+            if (BuildConfig.PLAY_STORE_RELEASE)
+                return;
             try {
                 for (Field field : f.getClass().getDeclaredFields()) {
                     Class<?> type = field.getType();