handleOpen is stopping clicks on other components in the input slot

[JohnCampionJr]

So I have an input control with a checkbox set as the input component in the slot.

But VueDatePicker stops the checkbox from working. (ie it works when the component is not inside of VueDatePicker).

I'm fairly sure this is being caused by the handleOpen click event preventing the default:

https://github.com/Vuepic/vue-datepicker/blob/6993cd913c95a504fd4c0079d86de54961566309/src/VueDatePicker/components/DatepickerInput.vue#L2C5-L2C30

which then goes here:

vue-datepicker/src/VueDatePicker/components/DatepickerInput.vue

Line 274 in 6993cd9

ev.preventDefault();

Could you add an ability to disable this event entirely?

[JohnCampionJr]

I have confirmed this in my fork and will provide a PR with my suggested fix :)