When a device returns INTERNAL_QUERY_ERROR for get_device_info, the
response is stored as a SmartErrorCode enum in _last_update. If another
module then raises DeviceError and the error is logged with %s formatting,
__repr__ calls self.model which calls _get_device_info, crashing with
TypeError: 'SmartErrorCode' object is not subscriptable.

Make __repr__ resilient by catching exceptions and falling back to a
basic representation without alias/model. This follows the Python
convention that __repr__ should never raise.

Fixes python-kasa#1671

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>