When tapping something on a touch-enabled device, `mouseMove` events are
still fired, so floatkit would still be triggered even if configured for
'hover' only. For links, this would be particularly strange, because the
tooltip would appear for a split-second, before the page navigation
occured.
To avoid this problem, we can use the more-modern 'pointerMove' event,
and check the `pointerType` to exclude 'touch'
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