[jdk23u] RFR: 8335530: Java file extension missing in AuthenticatorTest

[Johny Jose]

clean backport of https://git.openjdk.org/jdk/commit/a537e87d2d2c6bff63f63bb436e3e919740221ce

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Commit messages:
 - Backport a537e87d2d2c6bff63f63bb436e3e919740221ce

Changes: https://git.openjdk.org/jdk23u/pull/153/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk23u&pr=153&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335530
  Stats: 120 lines in 2 files changed: 60 ins; 60 del; 0 mod
  Patch: https://git.openjdk.org/jdk23u/pull/153.diff
  Fetch: git fetch https://git.openjdk.org/jdk23u.git pull/153/head:pull/153

PR: https://git.openjdk.org/jdk23u/pull/153