glow -p not working with nvimpager

Executing `glow -p README.md` returns an error only whenever `nvimpager` is set as the `PAGER`. Setting the pager to `most` or `less -r` solves the problem, but is inconvenient because `nvimpager` works fine for everything else.

```
glow -p README.md  ✔  NORMAL  09:01:51 PM  
Error: exit status 1
Usage:
glow [SOURCE|DIR] [flags]
glow [command]

Available Commands:

config Edit the glow config file
help Help about any command
stash Stash a markdown

Flags:
-a, --all show system files and directories (TUI-mode only)
--config string config file (default /home/luis/.config/glow/glow.yml)
-h, --help help for glow
-l, --local show local files only; no network (TUI-mode only)
-p, --pager display with pager
-s, --style string style name or JSON path (default "auto")
-v, --version version for glow
-w, --width uint word-wrap at width

Use "glow [command] --help" for more information about a command.
```

All markdown files over a certain length give this error. I attached an example.
[test.md](https://github.com/charmbracelet/glow/files/9946952/test.md)

Reproduce the failure with `glow -p test.md` while `nvimpager` is set as `PAGER`, using the attached long markdown file, then compare it with `most` or `less -r`. Trace the `glow -p` pager entry point and determine why longer markdown causes exit status 1; done means long files render successfully through nvimpager without the usage error.

Written by the indexing model from the issue text.