RFR: 8351374: Improve comment about queue.remove timeout in CleanerImpl.run [v2]

[Kim Barrett]

> Please review this revision of a previously puzzling comment intending to
> provide the rationale for a bit of non-obvious code.

Kim Barrett has updated the pull request incrementally with one additional commit since the last revision:

  bchristi-git review

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Changes:
  - all: https://git.openjdk.org/jdk/pull/23952/files
  - new: https://git.openjdk.org/jdk/pull/23952/files/68c2579c..1c15bce8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23952&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23952&range=00-01

  Stats: 5 lines in 1 file changed: 1 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/23952.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23952/head:pull/23952

PR: https://git.openjdk.org/jdk/pull/23952