[jdk8u-dev] RFR: 8239965: XMLEncoder/Test4625418.java fails due to "Error: Cp943 - can't read properly"

[Pratiksha Sawant]

This is a backport PR which needs to go along [JDK-8235834](https://bugs.openjdk.org/browse/JDK-8235834). As I'm backporting JDK-8235834, so need to backport this change as well [JDK-8239965](https://bugs.openjdk.org/browse/JDK-8239965).

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Commit messages:
 - Backport 24e646317651436e07dd133b154d9e812cf90aae

Changes: https://git.openjdk.org/jdk8u-dev/pull/500/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=500&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8239965
  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/500.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/500/head:pull/500

PR: https://git.openjdk.org/jdk8u-dev/pull/500