Improve error message by adding op name

PiperOrigin-RevId: 293084309
diff --git a/integrations/tensorflow/compiler/TFSavedModelLowerGlobalTensors.cpp b/integrations/tensorflow/compiler/TFSavedModelLowerGlobalTensors.cpp
index 123823a..4f77816 100644
--- a/integrations/tensorflow/compiler/TFSavedModelLowerGlobalTensors.cpp
+++ b/integrations/tensorflow/compiler/TFSavedModelLowerGlobalTensors.cpp
@@ -94,7 +94,8 @@
             continue;
           }
           return operand.getOwner()->emitError()
-                 << "unknown op operating on resource for global tensor";
+                 << "unknown op operating on resource for global tensor : "
+                 << operand.getOwner()->getName();
         }
       } else {
         // The value is already a tensor value type. Just RAUW it with a