Fix infinite loading of folders in shared tab

Signed-off-by: ZetaTom <70907959+ZetaTom@users.noreply.github.com>

app/src/main/java/com/owncloud/android/ui/fragment/SharedListFragment.kt

@@ -73,6 +73,7 @@ class SharedListFragment : OCFileListFragment(), Injectable {
                 val fileDisplayActivity = activity as FileDisplayActivity
                 fileDisplayActivity.updateActionBarTitleAndHomeButtonByString(getString(R.string.drawer_item_shared))
                 fileDisplayActivity.setMainFabVisible(false)
+                fileDisplayActivity.initSyncBroadcastReceiver()
             }
         }
     }