RFR: 8356212: runtime/cds/appcds/LotsOfSyntheticClasses.java timed out with -XX:+AOTClassLinking

[Calvin Cheung]

The LotsOfSyntheticClasses.java test times out intermittently when the `open/test/hotspot/jtreg:hotspot_aot_classlinking` test group is run with the` -XX:+AOTClassLinking` option on macosx-aarch64 platform.
Increasing the timeout value from 500 to 800 seems to have addressed the issue.
With the change, there's no timeout when the test group is run 40 times on macosx-aarch64 with the same option.

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Commit messages:
 - 8356212: runtime/cds/appcds/LotsOfSyntheticClasses.java timed out with -XX:+AOTClassLinking

Changes: https://git.openjdk.org/jdk/pull/25111/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25111&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8356212
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25111.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25111/head:pull/25111

PR: https://git.openjdk.org/jdk/pull/25111