Small --optimization-counter-threshold makes tests very slow,
especially on architectures where kernel service runs from
kernel and not from app-jit snapshot.
TEST=change in tests, *-ia32 bots
Fixes https://github.com/dart-lang/sdk/issues/48627
Change-Id: I63e7e201ef9a0e4f645016c39a5be1819b61822d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/263421
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
