Describe the bug

like_utf8 and nlike_utf8 and scalar variants don't take care of escaping the wildcard character.

To Reproduce

    test_utf8_scalar!(
        test_utf8_scalar_escape,
        vec!["a%", "a\\x"],
        "a\\%",
        like_utf8_scalar,
        vec![true, false]
    );

This fails in master, returning false / true.

Expected behavior
A clear and concise description of what you expected to happen.

Additional context
Add any other context about the problem here.