Use ajax for `Reference in New Issue`

[yp05327]

Description

We are using form post when during the request of Reference in New Issue.

gitea/templates/repo/issue/view_content/reference_issue_dialog.tmpl

Line 6 in a370efc

<form class="ui form" action="{{printf "%s/issues/new" .Repository.Link}}" method="post">

But since #25258, we are going to use json response in the backend. so frontend should also make some changes or you will get this:

Gitea Version

latest

Can you reproduce the bug on the Gitea demo site?

Yes

Log Gist

No response

Screenshots

No response

Git Version

No response

Operating System

No response

How are you running Gitea?

build

Database

None

[CaiCandong]

How to reproduce this problem? Can you give me detailed steps to reproduce it?

[CaiCandong]