fix(useDraggable): img dragging bug

[mnenie]

resolves #3755

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Description

So, in this issue, we have a problem related to the handling of img and without preventDefault: true in options we should not have a moving an img. When we set the preventDefault: true in options its work great, but without this, we get a bug that is reproduced in #3755

This pr resolves this bug

Additional context

[antfu]

I am not so sure about the special handling for IMG - it might happend to the other elements as well. I think the best cases would be to have users enable the preventDefaults if they expect that behavior. I would see this is more like a documentation issue - we could improve the docs and guide users to use that options.

[antfu]

As above

[mnenie]

I am not so sure about the special handling for IMG - it might happend to the other elements as well. I think the best cases would be to have users enable the preventDefaults if they expect that behavior. I would see this is more like a documentation issue - we could improve the docs and guide users to use that options.

yea maybe you're right, I'll do it 😉

[mnenie]

As above

@antfu check please, I've added edits to the documentation. I hope this is what we need 😉