[#13054] Make substrings of the name in dropdown selections of recipient to be searchable

[Wieln]

Fixes #13054

Outline of Solution
Replaced the recipient selection from a select element to an input element with a dropdown list to implement a searchable selection feature.

As users type, the dropdown dynamically filters and displays matching items. Users can either select an option or click outside the dropdown to close it, with the selected item being displayed in the input field.

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[Wieln]

Hi all,

Based on the error message from component-testing (ubuntu-latest),

I ran the commands gradlew.bat test --tests "integrationTests" and gradlew.bat test --tests "unitTests",

but both returned that

no tests were found for the specified includes: [integrationTests](--tests filter) or [unitTests](--tests filter) .

I searched for these keywords (as shown in the screenshot),

but I only found testng-component.xml in the resources folder and couldn't locate testng-it.xml (even in origin repo).

This is puzzling, and I believe it's the reason for the failure of component-testing (ubuntu-latest).

I'm unsure of the next steps; does anyone have any insights or suggestions?

Thank you :]]