Incorrect latest commit message in UI when viewing tag

[silverwind]

Description

The latest commit is incorrectly rendered when viewing a tag, the first line (commit title) is absent. It's okay when viewing a branch.

Not OK (tag view) https://try.gitea.io/silverwind/remap-css/src/tag/5.0.4:

OK (branch view) https://try.gitea.io/silverwind/remap-css/src/branch/master:

Gitea Version

1.19

Can you reproduce the bug on the Gitea demo site?

Yes

[KN4CK3R]

Added a patch in #21693.