[Feature]: add clearable to combobox

[joriverm]

Library

Web Components (@fluentui/web-components)

Describe the feature that you would like added

when using a combobox in some kind of filter, it is good to have a button inside the combobox to clear the selected value. from what i found this was already added to the react combobox but not in the webcomponents, so things like the blazor implementation can not use it either. this sounds to me like a good feature to have, since its been accepted in at least part of the fluentUI family ( #30248 & #30344, pr's: #30362 & #30033 ).

visually, i would do it like that, or similar to the fluent-search component

Have you discussed this feature with our team

No response

Additional context

No response

Validations

• [X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

Priority

High