RFR: 8374210: [BACKOUT] Move input validation checks to Java for java.lang.StringCoding intrinsics

[Volkan Yazici]

On Tue, 6 Jan 2026 10:53:21 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

>> Back out `java.lang.StringCoding` changes delivered in [JDK-8361842] (#25998 & 655dc516c22), which causes regressions reported in [JDK-8374210].
>> 
>> [JDK-8361842]: https://bugs.openjdk.org/browse/JDK-8361842
>> [JDK-8374210]: https://bugs.openjdk.org/browse/JDK-8374210
>
> Looks good to me.

@TobiHartmann, @shipilev, thanks so much for your kind help, and reviews.
As I stated earlier, Tier 1-3 are clear using c8acc80b8c6, and I see no other remarks.

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PR Comment: https://git.openjdk.org/jdk/pull/29055#issuecomment-3717974843