Address feedback of PR for ATOM-6088.

* Rename DrawItemKeyPair to DrawItemProperties.
* Switch back to use Ptr<DrawListTagRegistry> instead of DrawListTagRegistry
* Updated some comment.

Gems/Atom/RPI/Code/Source/RPI.Public/Pass/RasterPass.cpp

@@ -195,11 +195,11 @@ namespace AZ
                 SetSrgsForDraw(commandList);
             }
 
-            for (const RHI::DrawItemKeyPair& drawItemKeyPair : drawListViewPartition)
+            for (const RHI::DrawItemProperties& drawItemProperties : drawListViewPartition)
             {
-                if (drawItemKeyPair.m_drawFilterMask & m_pipeline->GetDrawFilterMask())
+                if (drawItemProperties.m_drawFilterMask & m_pipeline->GetDrawFilterMask())
                 {
-                    commandList->Submit(*drawItemKeyPair.m_item);
+                    commandList->Submit(*drawItemProperties.m_item);
                 }
             }
         }