Fix repo count in org action settings (#27245) (#27353)

Backport #27245 by @yp05327

Only in org action settings, repo count is missing

Before:

![image](4a74c090-c55f-4f06-810a-c390337efa9d)

![image](e234f7e7-178c-4186-bbc0-0f291192b011)

![image](c1db70cd-973b-40d5-ba17-1f354aed9149)
In other setting page:

![image](43bfec6b-a1a4-48a9-8280-ab6f967b7ec4)

After:

![image](9a697bd8-ce9f-40e2-8749-b46726d68d84)

![image](3b6d1e59-64dd-4655-953b-064718e6aa7a)

![image](5604c063-556c-4252-8778-4e5a5e23b7e1)

Co-authored-by: yp05327 <576951401@qq.com>

routers/web/repo/setting/variables.go

@@ -11,6 +11,7 @@ import (
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/setting"
 	shared "code.gitea.io/gitea/routers/web/shared/actions"
+	shared_user "code.gitea.io/gitea/routers/web/shared/user"
 )
 
 const (
@@ -40,6 +41,11 @@ func getVariablesCtx(ctx *context.Context) (*variablesCtx, error) {
 	}
 
 	if ctx.Data["PageIsOrgSettings"] == true {
+		err := shared_user.LoadHeaderCount(ctx)
+		if err != nil {
+			ctx.ServerError("LoadHeaderCount", err)
+			return nil, nil
+		}
 		return &variablesCtx{
 			OwnerID:           ctx.ContextUser.ID,
 			IsOrg:             true,