RFR: 8356977: UTF-8 cleanups [v2]

[Phil Race]

On Mon, 26 May 2025 08:20:19 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

>> I found a few other places in the code that can be cleaned up after the conversion to UTF-8.
>
> Magnus Ihse Bursie has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Restore MenuShortcut.java
>  - Restore LocaleDataTest.java

Approving client changes

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Marked as reviewed by prr (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/25228#pullrequestreview-2879326497