Pandas BUG: dtype="int64[pyarrow]foobar[pyarrow]" fails to raise

pd.Series(range(3), dtype="int64[pyarrow]foobar[pyarrow]")

In ArrowDtype.construct_from_string we do

        if not string.endswith("[pyarrow]"):
            raise TypeError(f"'{string}' must end with '[pyarrow]'")
        if string == "string[pyarrow]":
            # Ensure Registry.find skips ArrowDtype to use StringDtype instead
            raise TypeError("string[pyarrow] should be constructed by StringDtype")
        base_type = string.split("[pyarrow]")[0]

But that does not rule out the case where there are multiple "[pyarrow]"s in the string. This should raise.