RFR: 8332735: [JVMCI] Add extra JVMCI events for exception translation

[Doug Simon]

This PR adds a few extra JVMCI events that should help diagnose crashes when translating an exception between the HotSpot and libgraal heaps.

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Commit messages:
 - add JVMCI event for decoding step during exception translation

Changes: https://git.openjdk.org/jdk/pull/19350/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19350&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332735
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19350.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19350/head:pull/19350

PR: https://git.openjdk.org/jdk/pull/19350