fix: pr assignee info use array

app/controllers/pull_requests_controller.rb

@@ -276,11 +276,10 @@ class PullRequestsController < ApplicationController
     }
     assignee_login = User.find_by_id(params[:assigned_to_id])&.login
     @requests_params = @local_params.merge({
-      assignee: assignee_login,
       # assignees: ["#{params[:assigned_login].to_s}"],
       assignees: ["#{assignee_login.to_s}"],
-      labels: params[:issue_tag_ids],
-      due_date: Time.now
+      labels: params[:issue_tag_ids]
+      # due_date: Time.now
     })
     @issue_params = {
       author_id: current_user.id,

app/services/pull_requests/create_service.rb

@@ -125,7 +125,10 @@ class PullRequests::CreateService < ApplicationService
   end
 
   def gitea_pull_request_params
-    merge_original_pull_params.except(:milestone)
+    assignee_login = User.find_by_id(params[:assigned_to_id])&.login
+    merge_original_pull_params.except(:milestone).merge(      
+      # assignees: ["#{params[:assigned_login].to_s}"],
+      assignees: ["#{assignee_login.to_s}"])
   end
 
   def merge_original_pull_params