[dart2js] Default to printLegacyStars for debug printing
[dart2js] Default to printLegacyStars for debug printing

Change-Id: I504b6ebc4cc323c229d0aa068a874fe1331ddfbe
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/139562
Reviewed-by: Mayank Patke <e0355b78204b67a55a952941c68c8f1b40235938@google.com>
Commit-Queue: Stephen Adams <60cb5b73b7e0cb7dcda53302da4fab6ecfc7fa8b@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