Fails to start: can't make symlink at /var/run

I was curious to try the app out, but it never opens graphically. When attempting to run from the terminal, I get:

```sh
$ flatpak run io.github.bkbilly.lnxlink
bwrap: Can't make symlink at /var/run: existing destination is ../run
```

This sounds similar to https://github.com/bkbilly/lnxlink/issues/149 which was never responded to and auto-closed by a bot.

Start by reproducing the failure with `flatpak run io.github.bkbilly.lnxlink` and compare the `/var/run` error with issue #149. The report names no files or tests, so inspect the Flatpak packaging and startup configuration; done means the app launches graphically without the symlink error.

Written by the indexing model from the issue text.