[vm] Restore memory order of data access in Function::script to acquire.

TEST=tsan
Bug: https://github.com/dart-lang/sdk/issues/64091
Change-Id: I958b934acccc8b08ab334650bc2027b443e90212
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/541020
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ben Konyi <bkonyi@google.com>

Ryan Macnak committed 6d ago

dabddb448cbf8ad1e678ae689f208a26ae33b3cb

Parent: c91933f

Committed by dart-scoped@luci-project-accounts.iam.gserviceaccount.com <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> on 8/31/2026, 5:07:44 PM