RFR: 8368373: Test H3MalformedResponseTest.testMalformedResponse intermittent timed out

[SendaoYan]

Hi all,

The sub-test H3MalformedResponseTest.testMalformedResponse in test/jdk/java/net/httpclient/http3/H3MalformedResponseTest.java intermittent report java.util.concurrent.TimeoutException, espicial when this test run with other jtreg tests simultancely. This PR change the timeout vaule from 10 to 30 to make test run passed steady.

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Commit messages:
 - 8368373: Test java/net/httpclient/http3/H3MalformedResponseTest.java intermittent fails

Changes: https://git.openjdk.org/jdk/pull/27447/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27447&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368373
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/27447.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27447/head:pull/27447

PR: https://git.openjdk.org/jdk/pull/27447