Recombine test and skip both parts on Windows

Author: tleonhardt

tests/test_cmd2.py

@@ -1793,14 +1793,12 @@ def test_commandresult_falsy(commandresult_app):
     assert commandresult_app.last_result == cmd2.CommandResult('', arg)
 
 
-@pytest.mark.skipif(sys.platform.startswith('win'), reason="Test is unreliable on GitHub Actions Windows runners")
-def test_is_text_file_bad_no_exist(base_app):
+@pytest.mark.skipif(sys.platform.startswith('win'), reason="Test is problematic on GitHub Actions Windows runners")
+def test_is_text_file_bad_input(base_app):
     # Test with a non-existent file
     with pytest.raises(FileNotFoundError):
         utils.is_text_file('does_not_exist.txt')
 
-
-def test_is_text_file_bad_is_dir(base_app):
     # Test with a directory
     with pytest.raises(IsADirectoryError):
         utils.is_text_file('.')