agent_ui_v2: Fix broken LICENSE-GPL symlink pointing to itself (#45136)

Oleksii (Alexey) Orlenko created 

Fix broken LICENSE-GPL symlink that was pointing to itself instead of
the LICENSE-GPL file in the root of the repo.

It caused jujutsu to freak out and made it impossible to work with the
repo using it without switching to raw git:

```
Internal error: Failed to check out commit 22d04a82b119882e7aed88fb422430367c4df5f9
Caused by:
1: Failed to validate path /Users/aqrln/git/zed/crates/agent_ui_v2/LICENSE-GPL
2: Too many levels of symbolic links (os error 62)
```

Release Notes:

- N/A

Change summary

crates/agent_ui_v2/LICENSE-GPL | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Detailed changes