Ensure enumeration caches are always updated

Code/Tools/TestImpactFramework/Runtime/Code/Source/TestImpactRuntime.cpp

@@ -190,10 +190,8 @@ namespace TestImpact
         // Populate a set with the selected test targets so that we can infer the discarded test target not selected for this change list
         const AZStd::unordered_set<const TestTarget*> selectedTestTargetSet(selectedTestTargets.begin(), selectedTestTargets.end());
 
-        if (m_testShardingPolicy == Policy::TestSharding::Always)
-        {
-            EnumerateMutatedTestTargets(changeDependecyList);
-        }
+        // Update the enumeration caches of mutated targets regardless of the current sharding policy
+        EnumerateMutatedTestTargets(changeDependecyList);
 
         // The test targets in the main list not in the selected test target set are the test targets not selected for this change list
         for (const auto& testTarget : m_dynamicDependencyMap->GetTestTargetList().GetTargets())