OCFileListFragment: also reset search type when resetting search event

Fixes an issue where it was persisted after coming back from Favorites, and
the fragment was incorrectly deleting favorite files from the list when unfavoriting.

Signed-off-by: Álvaro Brey <alvaro.brey@nextcloud.com>

app/src/main/java/com/owncloud/android/ui/fragment/OCFileListFragment.java

@@ -1536,6 +1536,7 @@ public class OCFileListFragment extends ExtendedListFragment implements
     public void onMessageEvent(ChangeMenuEvent changeMenuEvent) {
         searchFragment = false;
         searchEvent = null;
+        currentSearchType = SearchType.NO_SEARCH;
 
         menuItemAddRemoveValue = MenuItemAddRemove.ADD_GRID_AND_SORT_WITH_SEARCH;
         Activity activity = getActivity();