feat(Dropdown): Adds support for closeOnChange when removing items

[stevenrick]

Fixes #4491

This PR adds support for closeOnChange for item removal via label and backspace in a Multiple Selection Dropdown

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Name	Status	Preview	Comments	Updated (UTC)
semantic-ui-react	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 29, 2024 4:52pm

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.50%. Comparing base (1623c8d) to head (34dedbd).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #4492 +/- ## ======================================= Coverage 99.50% 99.50% ======================================= Files 186 186 Lines 3465 3467 +2 ======================================= + Hits 3448 3450 +2 Misses 17 17 ```

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[stevenrick]

one note - i called this a feature, but it could be argued it is actually a bugfix - it's not obvious what the intended purpose of closeOnChange is but I'd argue it should be to close on ANY change (including removal) not just additions, hence this PR