fix: remove unnecessary notified flag updates in invitation processing

this flag should only be used by post-processing jobs (e.g. invite lifecycle cleanup)

Signed-off-by: Miguel Nogueira <me@nogueira.codes>

app/Http/Controllers/InvitationController.php

@@ -38,7 +38,6 @@ class InvitationController extends Controller
         $invitation->requestor_email = $request->input('email');
         $invitation->requestor_ip_address = $request->ip();
         $invitation->status = $guest ? 'pending' : 'approved';
-        $invitation->notified = !$guest; // confirmation msg doesn't count
         $invitation->invitation_code = bin2hex(random_bytes(64));
         $invitation->expiration = now()->addDays(2);
 
@@ -78,7 +77,6 @@ class InvitationController extends Controller
         if ($invitation->expiration && now()->lessThanOrEqualTo($invitation->expiration) && in_array($invitation->status, $approvableStates))
         {
             $invitation->status = 'approved';
-            $invitation->notified = true;
             $invitation->save();
 
             Mail::to($invitation->requestor_email)->send(new InviteApprovedMail($invitation));