Add warning when using a module with no return value (#5771)

* Add warning when using a module with no return value

* Update output files since changing source range of the pipeline argument

* Change wording of error message to not use the term unlabeled

rust/kcl-lib/tests/ssi_pattern/ops.snap

@@ -234,8 +234,8 @@ description: Operations executed ssi_pattern.kcl
         ]
       },
       "sourceRange": [
-        0,
-        0,
+        616,
+        637,
         0
       ]
     }