[infra] Skip dart/trigger_gc_in_native_test on TSAN bot.
[infra] Skip dart/trigger_gc_in_native_test on TSAN bot.

This multitest crashes on the bot, but not locally. The bot repeatedly fails to locate the core dump for this test, but succeeds for other crashes, and keeps the bot purple.

Bug: https://github.com/dart-lang/sdk/issues/39611
Change-Id: I2896f20de720f187d692c48c9a3232289cf19a67
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/138105
Reviewed-by: Alexander Thomas <29642742b6693024c89de8232f2e2542cf7eedf7@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk