don't filter results while sharing

[avinash-0007]

• Share only works by display name right now

• Search by email to share calendar is broken completely as there is a filterBy option in vue-select whose return value defaults to return (label || '').toLocaleLowerCase().indexOf(search.toLocaleLowerCase()) > -1

  • label in our code is set to displayName so only search by displayName works

• Since we already get our results by searching(DAV & OCS), I don't see why we need the filterBy option in the first place

  • So I just make the return value true
  • In case we do need the option, we should make it check for both displayName and email attributes

same as this PR : https://github.com/nextcloud/calendar/pull/5645

[hamza221]

@avinash-0007 thank you for your contribution, Can you make sure to sign off the commit, to have a green CI