Add troublesome test

Author: tjkuson

crates/ruff_python_formatter/resources/test/fixtures/ruff/statement/top_level.pyi

@@ -85,3 +85,7 @@ def function_with_comment():
 
 class EllispsisWithMultipleTrailing: # trailing class comment
     ... # trailing ellipsis comment
+
+class EllipsisWithLeadingComment:
+    # leading
+    ...