Fix crash when payload.type is undefined (Weather.gov incompatability)

[Aws505]

The module currently crashes when used with the default MagicMirror weather module using the Weather.gov provider, because payload.type is undefined.

This PR implements a safe fallback for the weather condition:

• payload.type
• payload.weatherType
• payload.current.weather[0].main
• default: "clouds"

This restores Unsplash queries and prevents module failure.