8297424: java/net/httpclient/AsyncExecutorShutdown.java fails in AssertionError due to misplaced assert

[GoeLin]

I backport this to make later changes clean.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8297424 needs maintainer approval

Issue

• JDK-8297424: java/net/httpclient/AsyncExecutorShutdown.java fails in AssertionError due to misplaced assert (Bug - P3 - Requested)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/3684/head:pull/3684
$ git checkout pull/3684

Update a local copy of the PR:
$ git checkout pull/3684
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/3684/head

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Checkout this PR locally:
$ git pr checkout 3684

View PR using the GUI difftool:
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https://git.openjdk.org/jdk17u-dev/pull/3684.diff

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[bridgekeeper]

👋 Welcome back goetz! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @GoeLin This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 00: Full (6ff97092)