RFR: 8275338: Add JFR events for notable serialization situations [v2]

[Raffaello Giulietti]

> Adds serialization misdeclaration events to JFR.

Raffaello Giulietti has updated the pull request incrementally with one additional commit since the last revision:

  Restrict accessibility of nested classes.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/17129/files
  - new: https://git.openjdk.org/jdk/pull/17129/files/f0b96e97..629e8f23

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17129&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17129&range=00-01

  Stats: 22 lines in 2 files changed: 3 ins; 2 del; 17 mod
  Patch: https://git.openjdk.org/jdk/pull/17129.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17129/head:pull/17129

PR: https://git.openjdk.org/jdk/pull/17129