svg: hex does not escape in SVG

[grisha2217]

.ToFavouritesButton::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height='24' stroke='rgb(140,140,140)' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round' class='css-i6dzq1'%3E%3Cpath d='M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z'%3E%3C/path%3E%3C/svg%3E");
}

Rgb converts to hex without escaping for svg-url