Trivial fixes to reduce the noise in the Valhalla CI: - [JDK-8386793](https://bugs.openjdk.org/browse/JDK-8386793) [lworld] ProblemList serviceability/sa/TestJhsdbJstackMixedWithXComp.java#xcomp-disable-tiered-compilation on linux-aarch64 - [JDK-8386794](https://bugs.openjdk.org/browse/JDK-8386794) [lworld] ProblemList tools/javac/platform/CanHandleClassFilesTest.java on all platforms with enable-preview
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8386794: [lworld] ProblemList tools/javac/platform/CanHandleClassFilesTest.java on all platforms with enable-preview - 8386793: [lworld] ProblemList serviceability/sa/TestJhsdbJstackMixedWithXComp.java#xcomp-disable-tiered-compilation on linux-aarch64 Changes: https://git.openjdk.org/valhalla/pull/2558/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2558&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8386793 Stats: 3 lines in 2 files changed: 2 ins; 0 del; 1 mod Patch: https://git.openjdk.org/valhalla/pull/2558.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2558/head:pull/2558 PR: https://git.openjdk.org/valhalla/pull/2558
