### Bug report

The options of the MultiSelect are not serialized when used in Template component.

### Reproduction of the problem

1. Open the following REPL sample: https://netcorerepl.telerik.com/mIOgYfFU47fvuM5N17

2. Review the MultiSelect that is initialized into the Grid's toolbar and notice that its options are not serialized.

### Current behavior

The Template component does not serialize the options of the MultiSelect.

### Expected/desired behavior

The Template component must serialize all options for the MultiSelect.

### Environment

* **Telerik UI for ASP.NET Core version: 2024.2.514
* **Browser: [all]