RFR: 8365703: Refactor ZipCoder to use common JLA.uncheckedNewStringNoRepl [v4]

[Lance Andersen]

On Tue, 19 Aug 2025 20:32:23 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Simplify JLA by changing ZipCoder to use JLA.uncheckedNewStringNoRepl(byte[] bytes, Charset cs) instead of the JLA.newStringUTF8NoRepl.
>> A copy of the bytes is made so it can be exclusively used to create the string. The "shared" flag is no longer needed in String.newStringUTF8NoRepl.
>
> Roger Riggs has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Declare newStringUTF8NoRepl `private`, it no longer needs to be package private

Marked as reviewed by lancea (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/26822#pullrequestreview-3133743530