[jdk21u] RFR: 8317967: Enhance test/jdk/javax/net/ssl/TLSCommon/SSLEngineTestCase.java to handle default cases

[Rajan Halade]

Clean backport to JDK 21u.

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Commit messages:
 - Backport 9728e21db1b35e487c562690de659aac386aa99d

Changes: https://git.openjdk.org/jdk21u/pull/248/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=248&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317967
  Stats: 8 lines in 1 file changed: 5 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk21u/pull/248.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/248/head:pull/248

PR: https://git.openjdk.org/jdk21u/pull/248