Remaining work does not depend on Sidekiq capacity

This updates the remaining_work_count method on two Geo workers that
use LimitedCapacity::Worker. The purpose of remaining_work_count is to
tell LimitedCapacity::Worker if there is work to be done. Whether
there is work to be done should not depend on how busy Sidekiq is.

ee/app/workers/geo/reverification_batch_worker.rb

@@ -25,7 +25,7 @@ module Geo
       replicator_class = replicator_class_for(replicable_name)
 
       @remaining_work_count ||= replicator_class
-        .remaining_reverification_batch_count(max_batch_count: remaining_capacity)
+        .remaining_reverification_batch_count(max_batch_count: max_running_jobs)
     end
 
     def max_running_jobs

ee/app/workers/geo/verification_batch_worker.rb

@@ -25,7 +25,7 @@ module Geo
       replicator_class = replicator_class_for(replicable_name)
 
       @remaining_work_count ||= replicator_class
-        .remaining_verification_batch_count(max_batch_count: remaining_capacity)
+        .remaining_verification_batch_count(max_batch_count: max_running_jobs)
     end
 
     def replicator_class_for(replicable_name)

ee/spec/workers/geo/verification_batch_worker_spec.rb

@@ -38,7 +38,7 @@ RSpec.describe Geo::VerificationBatchWorker, :geo do
     it 'returns remaining_verification_batch_count' do
       expected = 7
       args = { max_batch_count: 95 }
-      allow(job).to receive(:remaining_capacity).and_return(args[:max_batch_count])
+      allow(job).to receive(:max_running_jobs).and_return(args[:max_batch_count])
       allow(::Gitlab::Geo::Replicator).to receive(:for_replicable_name).with(replicable_name).and_return(replicator_class)
 
       expect(replicator_class).to receive(:remaining_verification_batch_count).with(args).and_return(expected)