Ignore unrecognized VM options in desugar.sh, such as the JVM 9 flags to silence warnings.
Ignore unrecognized VM options in desugar.sh, such as the JVM 9 flags to silence warnings.

This prevents stopping the build when invoking desugar with JDK 8.

RELNOTES: None.
PiperOrigin-RevId: 210172285

bazelbuild/bazel,ulfjack/bazel,davidzchen/bazel,perezd/bazel,twitter-forks/bazel,davidzchen/bazel,dslomov/bazel-windows,dslomov/bazel-windows,akira-baruah/bazel,werkt/bazel,werkt/bazel,dslomov/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,akira-baruah/bazel,cushon/bazel,dslomov/bazel,ulfjack/bazel,akira-baruah/bazel,cushon/bazel,perezd/bazel,ButterflyNetwork/bazel,werkt/bazel,ulfjack/bazel,twitter-forks/bazel,davidzchen/bazel,ulfjack/bazel,perezd/bazel,twitter-forks/bazel,aehlig/bazel,safarmer/bazel,perezd/bazel,davidzchen/bazel,akira-baruah/bazel,twitter-forks/bazel,dslomov/bazel-windows,akira-baruah/bazel,katre/bazel,safarmer/bazel,safarmer/bazel,davidzchen/bazel,werkt/bazel,werkt/bazel,cushon/bazel,dslomov/bazel,meteorcloudy/bazel,aehlig/bazel,aehlig/bazel,dslomov/bazel,aehlig/bazel,safarmer/bazel,davidzchen/bazel,twitter-forks/bazel,bazelbuild/bazel,meteorcloudy/bazel,katre/bazel,katre/bazel,meteorcloudy/bazel,ulfjack/bazel,akira-baruah/bazel,dslomov/bazel-windows,perezd/bazel,ButterflyNetwork/bazel,ButterflyNetwork/bazel,ulfjack/bazel,dslomov/bazel,meteorcloudy/bazel,dslomov/bazel,bazelbuild/bazel,meteorcloudy/bazel,cushon/bazel,katre/bazel,aehlig/bazel,bazelbuild/bazel,perezd/bazel,meteorcloudy/bazel,twitter-forks/bazel,bazelbuild/bazel,dslomov/bazel-windows,twitter-forks/bazel,perezd/bazel,werkt/bazel,cushon/bazel,katre/bazel,ulfjack/bazel,aehlig/bazel,aehlig/bazel,meteorcloudy/bazel,dslomov/bazel,katre/bazel,safarmer/bazel,ButterflyNetwork/bazel,dslomov/bazel-windows,ButterflyNetwork/bazel,safarmer/bazel,cushon/bazel,davidzchen/bazel