add missing import

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

app/src/main/java/com/nextcloud/ui/fileactions/FileActionsBottomSheet.kt

@@ -35,6 +35,7 @@ import android.widget.Toast
 import androidx.annotation.IdRes
 import androidx.appcompat.content.res.AppCompatResources
 import androidx.core.os.bundleOf
+import androidx.core.view.isEmpty
 import androidx.core.view.isVisible
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.setFragmentResult