RFR: 8349664: HEX dump should always use ASCII or ISO_8859_1 [v4]

[duke]

On Wed, 19 Feb 2025 17:21:10 GMT, Mikhail Yankelevich <duke at openjdk.org> wrote:

>> Changed `HexDumpEncoder`, so `encodeBuffer` always uses ISO_8859_1. 
>> This also fixes the issue with conversion in `encode` method, as the input is always ISO_8859_1.
>
> Mikhail Yankelevich has updated the pull request incrementally with one additional commit since the last revision:
> 
>   imports cleanup

@myankelev 
Your change (at version feb64396e4beefc460f1567b4e70992e385fb911) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/jdk/pull/23661#issuecomment-2669364069