Milestone in PR-Sidebar redirects to external bugtracker (if configured)

[hfrahmann]

Description

The link to a Milestone from the sidebar in the PR views has this URL:
https://<host>/gitea/MyOrganization/MyRepo/issues?milestone=19

In the Project/Repo an external bugtracker is configured, so the /issues link redirects to the external bugtracker.

The problem is now that the milestone will be redirected to the external bugtracker instead to the milestone page of gitea.

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Example on demo.gitea.com: https://gitea.com/hfrahmann/MyDemo/pulls/1

Screenshots

Gitea Version

1.23.1

Can you reproduce the bug on the Gitea demo site?

Yes

Operating System

No response

Browser Version

Vivaldi - 7.0.3495.27 (Stable channel) (arm64)

[wxiaoguang]

Will be fixed by Fix sidebar milestone link #33269