[vm] Use memory_order type argument provided for Array At/SetAt.
[vm] Use memory_order type argument provided for Array At/SetAt.


Issue https://github.com/dart-lang/sdk/issues/45170

TEST=ci

Change-Id: I8583a0df77914c4dc69a5b4565124a21a46421cf
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196562
Reviewed-by: Ryan Macnak <d738b7f001baf9789095d7dc549cff6de60b011d@google.com>
Commit-Queue: Alexander Aprelev <dfb74c35a357c2059971a4bf7fe26b6a7c18085d@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