[Bug]: bufferline rendering issue

### Is there an existing issue for this?

- [x] I have searched the existing issues

### What happened?

https://github.com/user-attachments/assets/053aad16-dc14-4b38-964a-cb96e75418bc

The `width` of each tab is dynamic when the focused is switched.

### What did you expect to happen?

The buffers' width should remain the same.

### Config

```lua
opts = {
options = {
show_buffer_close_icons = false,
close_command = function() Snacks.bufdelete() end,
right_mouse_command = function() Snacks.bufdelete() end,
diagnostics = "nvim_lsp",
},
},
```

### Additional Information

_No response_

### commit

_No response_