Change remote interaction dialog to use specific actions (#9743)

* Change remote interaction dialog to use specific actions

Instead of just "interact", use different strings based on whether
it's a reply, reblog or favourite. Add explanation why the step
is necessary in the first place

* Remove obsolete strings

config/locales/cy.yml

@@ -660,9 +660,6 @@ cy:
     no_account_html: Heb gyfrif? Mae modd i chi <a href='%{sign_up_path}' target='_blank'>gofrestru yma</a>
     proceed: Ymlaen i ddilyn
     prompt: 'Yr ydych am ddilyn:'
-  remote_interaction:
-    proceed: Ymlaen i ryngweithio
-    prompt: 'Rydych eisiau rhyngweithio a''r tŵt hwn:'
   remote_unfollow:
     error: Gwall
     title: Teitl