RFR: 8345432: (ch, fs) Replace anonymous Thread with InnocuousThread [v2]

[Brian Burkhalter]

> Change internal instances of anonymous `Thread`s to instances of `InnocuousThread`.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8345432: Change thread name; fix broken doc link

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22697/files
  - new: https://git.openjdk.org/jdk/pull/22697/files/01dad84b..7a421c1d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22697&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22697&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/22697.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22697/head:pull/22697

PR: https://git.openjdk.org/jdk/pull/22697