o.a.j.o.plugins.migration.version.VersionableEditor should create the version storage node, if needed

The method VersionableEditor#createEmptyHistory() is called if the migration of versions is disabled, but the node type of a migrated node strictly requires it to be versionable, because it inherits from mix:versionable (so that mix:versionable can't simply be removed). This may fail if the version storage node has not been explicitly created before the migration. Just creating the necessary node would be a more straightforward behavior.
Also we should change the name of that method, see OAK-10783.