`lightnind` is missing CLI options on darwin

I need to run `clightning` on my darwin setup. More specifically, I need to call `lightningd --bitcoin-datadir=${bitcoin_dir}`.

However, this CLI option is not available on the darwin build.

### Steps To Reproduce
Steps to reproduce the behavior (on darwin):
```
$ lightningd --bitcoin-datadir=.
2024-04-18T13:47:28.658Z INFO lightningd: v24.02.1
lightningd: --bitcoin-datadir=.: unknown option
```

I tested with installations both via:
- Nix
- Homebrew

### Expected behavior
Here's the expected behavior (validated on linux):
```
$ lightningd --bitcoin-datadir=.
2024-04-18T13:48:45.580Z INFO lightningd: Creating database
2024-04-18T13:48:45.604Z UNUSUAL hsmd: HSM: created new hsm_secret file
...
```