Padding while cropping needs to stay within sane bounds for shapefiles that span the whole Earth

[valeriupredoi]

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Closes #625

[bouweandela]

Thanks for the nice small pull request ;-) Could you have a look at my questions please?

[valeriupredoi]

cheers @bouweandela for the qwik approval - now I can plop this in #319 shipshape the tests for that one 🍺