Fix the blank line issue in test_builtin.py

Author: tangyuan0821

Lib/test/test_builtin.py

@@ -1132,7 +1132,7 @@ def test_filter_dealloc(self):
         del i
         gc.collect()
 
-    
+
     def test_filter_deep_nesting_recursion_error(self):
         # gh-137894: Test that deeply nested filter() iterator chains
         # raise RecursionError instead of causing segmentation fault.