🐛 Cover Art fails when YT provides a .webp formatted thumbnail

[mountainash]

There are a few YT Tracks where the highest sized thumbnail is in the WebP image format (eg) which causes the following error in background.js and the MP3 is unable to be created and downloaded.

TypeError: Cannot read properties of undefined (reading 'coverUrl')

Sample JSON

[
...
    {
        "url": "https://i.ytimg.com/vi/wXm07jdyT2Y/hqdefault.jpg?sqp=-oaymwEcCNACELwBSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLDenj18DWorX7yFTYzV7pW8ygcJqw",
        "width": 336,
        "height": 188
    },
    {
        "url": "https://i.ytimg.com/vi_webp/wXm07jdyT2Y/maxresdefault.webp",
        "width": 1920,
        "height": 1080
    }
]