Show the repo count in code tab on both user profile and org page. (#27048)

as title

Screenshot before
User Profile page 
<img width="1367" alt="image"
src="https://github.com/go-gitea/gitea/assets/80308335/24e79689-ba2f-4c85-b591-fe5621746965">

after 
<img width="1346" alt="image"
src="https://github.com/go-gitea/gitea/assets/80308335/754a7ee8-c2f0-424d-9ba8-be38a48140aa">


Org page
<img width="1354" alt="image"
src="https://github.com/go-gitea/gitea/assets/80308335/c96178d8-664f-45c5-a162-f4df5690d9d0">

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

routers/web/user/code.go

@@ -27,6 +27,11 @@ func CodeSearch(ctx *context.Context) {
 	shared_user.PrepareContextForProfileBigAvatar(ctx)
 	shared_user.RenderUserHeader(ctx)
 
+	if err := shared_user.LoadHeaderCount(ctx); err != nil {
+		ctx.ServerError("LoadHeaderCount", err)
+		return
+	}
+
 	ctx.Data["IsPackageEnabled"] = setting.Packages.Enabled
 	ctx.Data["IsRepoIndexerEnabled"] = setting.Indexer.RepoIndexerEnabled
 	ctx.Data["Title"] = ctx.Tr("explore.code")