Removing orphaned sidekiq-unique-jobs digests

sample.rb

> SidekiqUniqueJobs::LockDigest.new({
  'class' => 'SidekiqQueuesMetricsWorker',
  'queue' => 'system_critical',
  'lock_args' => [],
}).lock_digest
# => ":c9e4f70a93ec7b29f57842219285f439"

> r = Redis.new
# => #<Redis client v4.8.1 for redis://hostname....

> r.keys.select { |k| k.start_with? 'uniquejobs:c9e4c9e4f70a93ec7b29f57842219285f439' }
# =>
# ["uniquejobs:c9e4f70a93ec7b29f57842219285f439",
#  "uniquejobs:c9e4f70a93ec7b29f57842219285f439:QUEUED"]

> r.del "uniquejobs:c9e4f70a93ec7b29f57842219285f439:QUEUED"
# => 1
> r.del "uniquejobs:c9e4f70a93ec7b29f57842219285f439"
# => 1