RFR: 8376956: Add JVMTI phase entering/setting to hserr event log [v2]

[Matthias Baesken]

> We should add some info to the hserr/hsinfo event logs about JVMTI phases.

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  Change message

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29525/files
  - new: https://git.openjdk.org/jdk/pull/29525/files/d357777b..4b7e937d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29525&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29525&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/29525.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29525/head:pull/29525

PR: https://git.openjdk.org/jdk/pull/29525