RFR: 8348038: Docs build failing in Options.notifyListeners with AssertionError [v2]

[Archie Cobbs]

> The change in [JDK-8347474](https://bugs.openjdk.org/browse/JDK-8347474) caused `make all-docs-bundles` to start failing. This PR includes a fix for that.

Archie Cobbs has updated the pull request incrementally with one additional commit since the last revision:

  Replace previous unit test with one that fails before the fix.

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/23192/files
  - new: https://git.openjdk.org/jdk/pull/23192/files/7ca14398..6f780aed

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23192&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23192&range=00-01

  Stats: 62 lines in 2 files changed: 50 ins; 11 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/23192.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23192/head:pull/23192

PR: https://git.openjdk.org/jdk/pull/23192