`Create Tag Only` on `New release` should not require a `Title`

[viceice]

Description

Currently a Title is always required, even it's fully ignored when using the Create Tag Only button

Gitea Version

1.19.0

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?

Docker, but reproducable on gitea.com and try.gitea.io

Database

None