Latest main breaks PRs with comments

[gempir]

Description

Adding a comment to a PR will cause the PR page to only answer with a 500.
I tried it on the 2 commits below and also the gitea demo instance.

Not sure at what point this bug came.

https://try.gitea.io/gempir/gempbot/pulls/1/files

Server error message:

2023/02/17 21:01:44 ...s/context/context.go:231:HTML() [E] [63efdd28-32] Render failed: template: shared/user/avatarlink:1:81: executing "shared/user/avatarlink" at <$.Context>: wrong type for value; expected context.Context; got interface {}
2023/02/17 21:01:44 [63efdd28-32] router: completed GET /gempir/gempbot/pulls/2/files for [::1]:33960, 500 Internal Server Error in 101.7ms @ repo/pull.go:672(repo.ViewPullFiles)

Test commits which were all broken (so has to be before):
Powered by Gitea Version: 1.19.0+dev-504-ge7ef94e00 Page: 187ms Template: 1ms
e7ef94e
bd820aa

Gitea Version

e7ef94e

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?

locally on linux with the make command in the readme. But also happens on the try.gitea.io page.

Database

SQLite

[yardenshoham]

How to reproduce?

[gempir]

Just add a comment on a code line

[yardenshoham]

Feels like a regression from #22294, reminds me of #22924