test/test_bluefs: reproduce volume selector inconsistency after

test/test_bluefs: reproduce volume selector inconsistency after
recovering WAL in envelope mode.

Reproduces: https://tracker.ceph.com/issues/74765

Exact bug reproduction (which occurs on file removal) requires
'bluefs_check_volume_selector_on_mount' to be set manually to false
in 'wal_v2_simulate_crash' test case.
That's not the case for the default implementation which fails volume selector
validation at earlier stage during BlueFS mount.
This seems a general approach which provides better test coverage.

Signed-off-by: Igor Fedotov <igor.fedotov@croit.io>