feat: Delete notification by id API (#8430)

app/controllers/api/v1/accounts/notifications_controller.rb

@@ -1,7 +1,7 @@
 class Api::V1::Accounts::NotificationsController < Api::V1::Accounts::BaseController
   RESULTS_PER_PAGE = 15
 
-  before_action :fetch_notification, only: [:update]
+  before_action :fetch_notification, only: [:update, :destroy]
   before_action :set_primary_actor, only: [:read_all]
   before_action :set_current_page, only: [:index]
 
@@ -28,6 +28,11 @@ class Api::V1::Accounts::NotificationsController < Api::V1::Accounts::BaseContro
     render json: @notification
   end
 
+  def destroy
+    @notification.destroy
+    head :ok
+  end
+
   def unread_count
     @unread_count = current_user.notifications.where(account_id: current_account.id, read_at: nil).count
     render json: @unread_count