DropDown: selected value not shown if not present in options list

Describe the bug

If the user selects a value in the Dropdown component, then the list of options changes, so that this value is no longer in the list of options, the selected value is shown as blank (despite the component still having a value).

The component keeps the selected value, but it is not rendered.

Reproducer

https://stackblitz.com/edit/primereact-dropdown-custom-mnqewbpr?file=src%2FApp.tsx

System Information

primereact: ^10.9.7 => 10.9.7
react: ^19.2.0 => 19.2.4
tailwindcss: ^4.1.13 => 4.2.1

Steps to reproduce the behavior

1. Click on dopdown to extend options
2. Select an option in the list
3. Do any action that will change the list of options (for example in the reproducer click on dropdown and search for something different than the current selected value)
4. Value stays selected but it is not rendered in the dropdown

Note: If your search result does contain the selected option, the dropdown renders as expected. This bug is only replicated if the selected option is not in the list of options.
Note: valueTemplate is not rendered on screen when the option is not present in the list
Note: Possible regression of issue https://github.com/primefaces/primereact/issues/2644

Expected behavior

selected value is shown (or valueTemplate is rendered on screen)

Start with the reproducer in src/App.tsx and follow the Dropdown component behavior after the options change. Verify the case where the selected value is absent from the current options, including valueTemplate. Done means the selected value or its template remains visible after filtering removes that option.