RFR: 8378276: Refactor test/jdk/java/net/httpclient/quic/ TestNG tests to JUnit [v2]

[Daniel Fuchs]

> TestNG tests located under test/jdk/java/net/httpclient/quic/ are refactored to use JUnit.
>  Mostly mechanical - a couple of `assertEquals` calls had to be turned into `assertArrayEquals`.

Daniel Fuchs has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into ITestContext-quic-8378276
 - 8378276: Refactor test/jdk/java/net/httpclient/quic/ TestNG tests to JUnit

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29841/files
  - new: https://git.openjdk.org/jdk/pull/29841/files/5107868c..4eee7696

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29841&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29841&range=00-01

  Stats: 3384 lines in 83 files changed: 746 ins; 2479 del; 159 mod
  Patch: https://git.openjdk.org/jdk/pull/29841.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29841/head:pull/29841

PR: https://git.openjdk.org/jdk/pull/29841