[jdk8u-ri] RFR: 8301400: Allow additional characters for GB18030-2022 support

[Andrew John Hughes]

On Tue, 21 Feb 2023 19:14:38 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> Please review the changes to the Reference Implementation of the proposed Maintenance Release of the Java SE 8 (https://mail.openjdk.org/pipermail/jdk8u-dev/2023-February/016710.html). The RI contains a portion of previously released Maintenance Release 2 of the Java SE 8 (Unicode Characters) updates as well. (https://jcp.org/aboutJava/communityprocess/maintenance/jsr337/jsr337-mr2-changes.html#s3)

Approved with `jdk8u43-fix-yes`

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PR: https://git.openjdk.org/jdk8u-ri/pull/10