RFR: 8337334: Test tools/javac/7142086/T7142086.java timeout with fastdebug binary

[SendaoYan]

Hi all,
Test `tools/javac/7142086/T7142086.java` run timeouted with fastdebug binary. I think it's necessory set more timeout value  when the tested binary is fastdebug or slowdebug.

The change has been verified, no risk.

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Commit messages:
 - 8337334: Test tools/javac/7142086/T7142086.java timeout with fastdebug binary

Changes: https://git.openjdk.org/jdk/pull/20370/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20370&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8337334
  Stats: 9 lines in 1 file changed: 8 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/20370.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20370/head:pull/20370

PR: https://git.openjdk.org/jdk/pull/20370