v1.1.8 — Translate confirmed Flow 2 errors

Flow 2 error-message follow-up:

• Adds English messages for confirmed fault codes.
• Adds current app code 1044 / 0x02020031 as roller_brush_tangled.
• sensor.*_error_message now uses English text for mapped codes and falls back to the robot localized firmware text for unknown codes.
• Binary-sensor attributes keep the original localized message as localized_message for verification.