link edit datepicker sets event to a string date prop

[kiranparajuli589]

Description

Datepicker in LinkEdit component is described as:

web/packages/web-app-files/src/components/SideBar/Links/PublicLinks/LinkEdit.vue

Lines 40 to 59 in d6afce7

	<div v-if="$_expirationDate" class="uk-width-1-1 uk-width-2-5@m">
	<div class="uk-position-relative">
	<oc-datepicker
	id="oc-files-file-link-expire-date"
	:key="'oc-datepicker-' + expireDate"
	:label="expirationDateLabel"
	:date="expireDate"
	:max-datetime="$_maxExpirationDate"
	:min-datetime="$_minExpirationDate"
	@input="expireDate = $event"
	/>
	<oc-button
	v-if="!$_expirationDate.enforced && !!expireDate"
	id="oc-files-file-link-expire-date-delete"
	class="oc-mt-s"
	appearance="raw"
	@click="expireDate = null"
	v-text="$gettext('Remove expiration date')"
	/>
	</div>

whenever the input event is emitted from oc-datepicker it sends a date string value
https://github.com/owncloud/owncloud-design-system/blob/490bd01a4cdd46d84f881ec04f0de700af10621f/src/components/OcDatepicker.vue#L61

but inside link edit, that input event is watched to set that event to the form value

web/packages/web-app-files/src/components/SideBar/Links/PublicLinks/LinkEdit.vue

Line 49 in d6afce7

@input="expireDate = $event"

due to this, date prop on datepicker input is unhappy about the receiving value type and these console errors are generated:

console.error
    [Vue warn]: Invalid prop: type check failed for prop "date". Expected String, got Event 
    
    found in
    
    ---> <OcDatepicker>
           <Anonymous>
             <Root>

      at warn (node_modules/vue/dist/vue.runtime.common.dev.js:621:15)
      at assertProp (node_modules/vue/dist/vue.runtime.common.dev.js:1702:5)
      at validateProp (node_modules/vue/dist/vue.runtime.common.dev.js:1628:5)
      at loop (node_modules/vue/dist/vue.runtime.common.dev.js:4664:17)
      at initProps (node_modules/vue/dist/vue.runtime.common.dev.js:4695:33)
      at initState (node_modules/vue/dist/vue.runtime.common.dev.js:4638:21)
      at VueComponent.Vue._init (node_modules/vue/dist/vue.runtime.common.dev.js:5001:5)

[pascalwengerter]

Closing here, we've redesigned the link edit functionality and some issues around date changes have been resolved, e.g. #6865