RFR: 8345432: (ch, fs) Replace anonymous Thread with InnocuousThread [v4]

[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: Revert commit aa5bb8a; give Windows PipeImpl LoopbackConnector thread a name

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22697/files
  - new: https://git.openjdk.org/jdk/pull/22697/files/aa5bb8a1..c4196757

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22697&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22697&range=02-03

  Stats: 32 lines in 2 files changed: 3 ins; 22 del; 7 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