[jdk21u-dev] RFR: 8340230: Tests crash: assert(is_in_encoding_range || k->is_interface() || k->is_abstract()) failed: sanity

[Martin Doerr]

Clean backport of [JDK-8340230](https://bugs.openjdk.org/browse/JDK-8340230) from jdk23u.

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Commit messages:
 - Backport a6754f31cf52c3058d5f95a54e9f66738f4216e6

Changes: https://git.openjdk.org/jdk21u-dev/pull/1001/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1001&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340230
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1001.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1001/head:pull/1001

PR: https://git.openjdk.org/jdk21u-dev/pull/1001