[TS] Remove wrong and obsolete NS prefix use (#6604)

tests/tsconfig.json

@@ -15,9 +15,7 @@
   "include": [ 
     "my-game/**/*.ts",
     "optional_scalars/**/*.ts",
+    "namespace_test/**/*.ts",
     "union_vector/**/*.ts"
-  ],
-  "exclude": [
-    "namespace_test/**/*.ts"
   ]
 }