Fixes #22401 In the fix for scylladb/scylla-enterprise#892, the extraction and check for sstable component encryption mask was copied to a subroutine for description purposes, but a very important 1 << <value> shift was somehow left on the floor. Without this, the check for whether we actually contain a component encrypted can be wholly broken for some components. Closes scylladb/scylladb#22398