RFR: 8368095: [leyden] Fix klass dependency recording

[Aleksey Shipilev]

See the bug for symptoms. https://github.com/openjdk/leyden/commit/7b7648a4c9f67be509c6fccbcbc0502648388fdc exposed that our dependency recording is not actually accurate. Now that we check that precompiled tasks have dependencies recorded, before we treat class IK as fully initialized, _missing dependencies_ lead to premature replacement of AP4 -> A4, and potential trap from A4.

Additional testing:
 - [x] Linux x86_64 server fastdebug, `runtime/cds`
 - [ ] Benchmarks

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Commit messages:
 - Revert unnecessary
 - Fix

Changes: https://git.openjdk.org/leyden/pull/97/files
  Webrev: https://webrevs.openjdk.org/?repo=leyden&pr=97&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368095
  Stats: 35 lines in 3 files changed: 8 ins; 9 del; 18 mod
  Patch: https://git.openjdk.org/leyden/pull/97.diff
  Fetch: git fetch https://git.openjdk.org/leyden.git pull/97/head:pull/97

PR: https://git.openjdk.org/leyden/pull/97