Fix: Editing a poll will silently change it to a closed poll (#9809)

* add failing test case

* dont reset poll disclosure on editing

src/components/views/elements/PollCreateDialog.tsx

@@ -138,7 +138,7 @@ export default class PollCreateDialog extends ScrollableBaseModal<IProps, IState
         const pollStart = PollStartEvent.from(
             this.state.question.trim(),
             this.state.options.map((a) => a.trim()).filter((a) => !!a),
-            this.state.kind,
+            this.state.kind.name,
         ).serialize();
 
         if (!this.props.editingMxEvent) {