apacheGH-39047: [JS] Enable test for generate_primitive_large_offsets_case (apache#39470)

* Closes: apache#39047

Author: domoritz

dev/archery/archery/integration/datagen.py

@@ -1873,8 +1873,7 @@ def _temp_path():
         generate_primitive_case([0, 0, 0], name='primitive_zerolength'),
 
         generate_primitive_large_offsets_case([17, 20])
-        .skip_tester('C#')
-        .skip_tester('JS'),
+        .skip_tester('C#'),
 
         generate_null_case([10, 0]),