[analyzer] Make FileByteStore.flush() a no-op on Windows

Fixes https://github.com/dart-lang/sdk/issues/64190

Change-Id: Ia1bf5a5d3b49be4aed0ba160136360f32733ca4e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/544800
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>

Danny Tuppeny committed 1d ago

c7996176d0b1312f0e09685326a2a8cc568b48c2

Parent: e73814a

Committed by dart-scoped@luci-project-accounts.iam.gserviceaccount.com <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> on 9/2/2026, 11:46:24 PM