Fixed: Provider health checks persist after add until next scheduled check

(cherry picked from commit 202449c40c82c6dfd2d15844c578436bbe3c8872)

Closes #2485

src/NzbDrone.Core/ThingiProvider/ProviderFactory.cs

@@ -103,9 +103,10 @@ namespace NzbDrone.Core.ThingiProvider
 
         public virtual TProviderDefinition Create(TProviderDefinition definition)
         {
-            var addedDefinition = _providerRepository.Insert(definition);
-            _eventAggregator.PublishEvent(new ProviderAddedEvent<TProvider>(definition));
-            return addedDefinition;
+            var result = _providerRepository.Insert(definition);
+            _eventAggregator.PublishEvent(new ProviderAddedEvent<TProvider>(result));
+
+            return result;
         }
 
         public virtual void Update(TProviderDefinition definition)