Port #10252 back manually to stable-33.0 - #10256

…le-33.0

The SwiftPM test target did not compile on stable-33.0, independent of any
single change, due to two partial-backport drifts:

- MoveSafeDeletionTests used Enumerator.syncAnchor(at:), a helper introduced by
  the version-tagged sync anchor work (#10065) that was never backported to
  stable-33.0. Build the plain ISO8601 NSFileProviderSyncAnchor directly, as the
  other tests on this branch already do.
- ItemPropertyTests' allowsExcludingFromSync test constructed an Item without the
  displayFileActions argument, which became a required Item.init parameter on
  stable-33.0; the other call sites pass it but this one was missed. Pass
  displayFileActions: false to match.

No production code is affected. Full test target now builds and passes.

Signed-off-by: Iva Horn <[email protected]>

Co-Authored-By: Claude Opus 4.8 <[email protected]>

…ches

The workflow only triggered on master, so for pull_request events (which use the
base branch's workflow + branch filter) backport PRs targeting stable-* never ran
the SwiftFormat lint or the xcodebuild test job. That is how partial backports left
the stable-33.0 test target uncompilable behind green checks. Add the stable-* glob
to both the push and pull_request branch filters so the kit is built and tested on
stable branches too.

Signed-off-by: Iva Horn <[email protected]>

Co-Authored-By: Claude Opus 4.8 <[email protected]>