[jdk17u-dev] RFR: 8310631: test/jdk/sun/nio/cs/TestCharsetMapping.java is spuriously passing

[Goetz Lindenmaier]

I backport this for parity with 17.0.11-oracle.

I hat to resolve trivialle, presumably because [8257733: Move module-specific data from make to respective module](https://github.com/openjdk/jdk/commit/f8878cb0cc436993ef1222bc13b00b923d91aad1) is not in 17.

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Commit messages:
 - Backport e3201d1d13433857a1b34ff0ca93f9ae1a4e22aa

Changes: https://git.openjdk.org/jdk17u-dev/pull/2126/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2126&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310631
  Stats: 377 lines in 7 files changed: 80 ins; 228 del; 69 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2126.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2126/head:pull/2126

PR: https://git.openjdk.org/jdk17u-dev/pull/2126