Fix phoenix at 1.6.2

See merge request pleroma/pleroma-fe!1502

According to https://github.com/phoenixframework/phoenix/issues/4623 ,
1.6.2 seems to not have the disconnection bug.

Migration to Vue 3 (again)

See merge request pleroma/pleroma-fe!1385

Remove Vue3 compat build

See merge request pleroma/pleroma-fe!1500

Fix English translation of Shoutbox in features panel

See merge request pleroma/pleroma-fe!1489

* vue3-again:
  oops

* vue3-again:
  fix some mishaps i noticed during self-review

* vue3-again:
  fix importer

* vue3-again:
  make all clickable icons into actual buttons

* vue3-again:
  fix emoji input warning spam
  fix error clear icon
  Add controlledShowingLongSubject and toggle in StatusContent props

Add controlledShowingLongSubject and toggle in StatusContent props

See merge request pleroma/pleroma-fe!1499

* vue3-again:
  fix warning about custom component
  fix?
  fix some issues with trees
  removing uselsess stuff
  fix reset buttons in profile again
  fix spacing in poll expiration label
  registration fixes

* vue3-again:
  re-fix i18n warnings again
  fix qr code