fix: include both test in PD_LTE_22 condition

Author: rinzool

tests/test_frame.py

@@ -2256,13 +2256,6 @@ def test_frame_stack() -> None:
             ),
             pd.Series,
         )
-        check(
-            assert_type(
-                df_multi_level_cols2.stack(0, dropna=True, sort=True),
-                Union[pd.DataFrame, "pd.Series[Any]"],
-            ),
-            pd.DataFrame,
-        )
         if PD_LTE_22:
             check(
                 assert_type(
@@ -2271,6 +2264,13 @@ def test_frame_stack() -> None:
                 ),
                 pd.DataFrame,
             )
+            check(
+                assert_type(
+                    df_multi_level_cols2.stack(0, dropna=True, sort=True),
+                    Union[pd.DataFrame, "pd.Series[Any]"],
+                ),
+                pd.DataFrame,
+            )
 
 
 def test_frame_reindex() -> None: