Fix condition check for mouseout event

[groomershop-mt]

Currently this is causing JS errors:

self._getLastElement().hasClass is not a function. (In 'self._getLastElement().hasClass(self.options.selectClass)', 'self._getLastElement().hasClass' is undefined)

[rbayet]

Hello @groomershop-mt,

I'm not able to reproduce the error in any context (because the mouseleave event is triggered instead/before ?) but indeed, if I remove all other event handlers except the mouseenter), I can see that the event handler is not doing what is supposed to do, that is removing the selectClass indicating focus on the last element of the vertical list of all result elements if the mouse is exiting the list, for instance through that last element.

For instance, going from here

to there

Considering that our form.mini.js is heavily inspired by the Magento one, you could probably also propose a similar PR on their github (for people not using Elasticsuite)

Regards