Drives a real Store through scratch, the bundled-copy copytree, tree_digest,
publish and removal over a tree with files and a directory beyond MAX_PATH,
then checks the facts record and composed child env carry no \\?\ prefix.
The test first asserts RtlAreLongPathsEnabled() is false so it cannot pass
as a false proof. The wine2e lane sets LongPathsEnabled=0 in a separate,
final step and selects the test with -m 'platforms and integration'.
a993395d6b