fix: incorrect scope across controllers (#14459)

Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/controllers/api/v1/notification_subscriptions_controller.rb

@@ -8,7 +8,8 @@ class Api::V1::NotificationSubscriptionsController < Api::BaseController
   end
 
   def destroy
-    notification_subscription = NotificationSubscription.where(["subscription_attributes->>'push_token' = ?", params[:push_token]]).first
+    notification_subscription = current_user.notification_subscriptions
+                                            .where(["subscription_attributes->>'push_token' = ?", params[:push_token]]).first
     notification_subscription.destroy! if notification_subscription.present?
     head :ok
   end