RFR: 8273349: Check uses of Stream::peek in controls and replace as needed [v3]

[drmarmac]

On Thu, 28 Mar 2024 08:49:44 GMT, drmarmac <duke at openjdk.org> wrote:

>> This PR removes potentially incorrect usages of Stream.peek().
>> The changed code should be covered by the tests that are already present.
>
> drmarmac has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Preallocate in SelectedIndicesList.set()
>  - Remove unused import

I also removed a now unused import in ControlUtils.java.

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PR Comment: https://git.openjdk.org/jfx/pull/1430#issuecomment-2024697576