HttpsError.__init__ does not pass message to super().__init__() #314

Description

In src/firebase_functions/https_fn.py, HttpsError.__init__ stores self.message = message but calls super().__init__() with no arguments:

https://github.com/firebase/firebase-functions-python/blob/main/src/firebase_functions/https_fn.py#L251-L266

    def __init__(
        self,
        code: FunctionsErrorCode,
        message: str,
        details: _typing.Any | None = None,
    ):
        self.code = code
        self.message = message
        self.details = details

        if code not in _error_code_map:
            raise ValueError(f"Unknown error code: ${code}.")

        self._http_error_code = _error_code_map[code]

        super().__init__()

Impact

Because message is not passed to super().__init__(message):

• str(err) evaluates to "" (empty string) and err.args is ().
• Logging the exception directly (e.g. logger.error(err)) or inspecting tracebacks in tests / unhandled contexts prints firebase_functions.https_fn.HttpsError with no message.

Suggested Fix

Pass message to super().__init__(message).

(Context: surfaced via firebase/functions-samples#1137)