Fix material editor crash on shutdown if graph canvas gem is loaded

Signed-off-by: Guthrie Adams <guthadam@amazon.com>

Gems/GraphCanvas/Code/Source/Translation/TranslationBuilder.cpp

@@ -40,10 +40,14 @@ namespace GraphCanvas
         {
             AZ::Data::AssetManager::Instance().RegisterHandler(m_assetHandler.get(), assetType);
         }
+
+        AssetBuilderSDK::AssetBuilderCommandBus::Handler::BusConnect(GetUUID());
     }
 
     void TranslationAssetWorker::Deactivate()
     {
+        AssetBuilderSDK::AssetBuilderCommandBus::Handler::BusDisconnect();
+
         if (AZ::Data::AssetManager::Instance().GetHandler(AZ::Data::AssetType{ azrtti_typeid<TranslationAsset>() }))
         {
             AZ::Data::AssetManager::Instance().UnregisterHandler(m_assetHandler.get());