Status line under a vertical split buffer

[RizaHKhan]

Describe the bug

The statusline should now only appear within the Tmux statusbar. However, there is now one under the buffer that is vertically split.

echo tpipeline#debug#info()

To reproduce

Vertically split a buffer

Expected behavior

Only one statusline is shown at bottom (with Tmux statusbar)

Terminal emulator

Neovim 10.2

Debug output

Please don't hate me, I couldn't seem to copy it so I pasted the output above in an image view.

[RizaHKhan]

What it should look like:

[vimpostor]

That's just the way that vim shows horizontal splits by default. See #19 for how to get rid of the statusline in horizontal split separators.