RFR: 8286510: Tests under dynamicArchive/methodHandles should check for loading of lambda proxy classes

[Calvin Cheung]

Fixing the tests under `runtime/cds/appcds/dynamicArchive/methodHandles` - adding a check for loading of lambda proxy classes from the CDS dynamic archive.

Tested locally on linux-x64 and passed tiers 1-3 testing.

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Commit messages:
 - 8286510: Tests under dynamicArchive/methodHandles should check for loading of lambda proxy classes

Changes: https://git.openjdk.org/jdk/pull/12414/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12414&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8286510
  Stats: 141 lines in 7 files changed: 112 ins; 21 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/12414.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12414/head:pull/12414

PR: https://git.openjdk.org/jdk/pull/12414