Better fix for menu opening after selection issue
Better fix for menu opening after selection issue

This works because when the mouse clicks an item, `md-autocomplete`
loses focus so we can disable renderFilteredList() until the element is
focused again. However, with keyboard selection, the input remains
focused so we only disable it for one input event, therefore allowing
the input still to be modified.

jaceks-iRonin/vue-material-test,jaceks-iRonin/vue-material-test