RFR: 8356177: Regression after JDK-8352180 [v2]

[Alex Menkov]

> The fix handles a special case when `AttachListener::dequeue()` fails to read/parse attach command request and 'PipeChannel' destructor is called when the current thread is `blocked`.
> 
> Testing: tier1..4,hs-tier5-svc

Alex Menkov has updated the pull request incrementally with one additional commit since the last revision:

  feedback

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25219/files
  - new: https://git.openjdk.org/jdk/pull/25219/files/74c68070..ee6026a8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25219&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25219&range=00-01

  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25219.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25219/head:pull/25219

PR: https://git.openjdk.org/jdk/pull/25219