fixup! Fix whitespace insensitive check triggering on tabs

Author: robsdedude

tests/unit/test_isort.py

@@ -4212,7 +4212,10 @@ def test_to_ensure_empty_line_not_added_to_file_start_issue_889() -> None:
 
 
 @pytest.mark.parametrize("ws", ["", " ", "\t", "\f", "\n"])
-def test_to_ensure_correctly_handling_of_whitespace_only_issue_811(ws, capsys) -> None:
+def test_to_ensure_correctly_handling_of_whitespace_only_issue_811(
+    ws: str,
+    capsys: pytest.CaptureFixture[str],
+) -> None:
     test_input = f'import os\nimport sys\n\n{ws}\ndef my_function():\n    print("hi")\n'
     assert isort.check_code(test_input, ignore_whitespace=True)
     out, err = capsys.readouterr()