Fix active worker detection by using correct keys (#756)

Rename keys from :workers to :work since that's correct name set in Redis

lib/sidekiq_unique_jobs/lua/shared/_find_digest_in_process_set.lua

@@ -15,7 +15,7 @@ local function find_digest_in_process_set(digest, threshold)
     log_debug("Found number of processes:", #processes, "next cursor:", next_process_cursor)
 
     for _, process in ipairs(processes) do
-      local workers_key = process .. ":workers"
+      local workers_key = process .. ":work"
       log_debug("searching in process set:", process,
                 "for digest:", digest,
                 "cursor:", process_cursor)

lib/sidekiq_unique_jobs/orphans/ruby_reaper.rb

@@ -195,7 +195,7 @@ def active?(digest) # rubocop:disable Metrics/MethodLength, Metrics/CyclomaticCo
               else
                 pipeline.exists(key)
               end
-              pipeline.hgetall("#{key}:workers")
+              pipeline.hgetall("#{key}:work")
             end
 
             next unless valid

spec/sidekiq_unique_jobs/lua/reap_orphans_spec.rb

@@ -124,7 +124,7 @@
     context "with job" do
       let(:process_key) { "process-id" }
       let(:thread_id)   { "thread-id" }
-      let(:worker_key)  { "#{process_key}:workers" }
+      let(:worker_key)  { "#{process_key}:work" }
 
       before do
         SidekiqUniqueJobs.redis do |conn|

spec/sidekiq_unique_jobs/orphans/reaper_spec.rb

@@ -131,7 +131,7 @@
         context "with job in process" do
           let(:process_key)    { "process-id" }
           let(:thread_id)      { "thread-id" }
-          let(:worker_key)     { "#{process_key}:workers" }
+          let(:worker_key)     { "#{process_key}:work" }
           let(:created_at)     { (Time.now - reaper_timeout).to_f }
           let(:reaper_timeout) { SidekiqUniqueJobs.config.reaper_timeout }