Daemon not running on MacOS

### What is the issue?

I have had Tailscale running fine on my MacOS 1.47 system fine for over a year. This morning it was disconnected and I couldn't get it to reconnect. I decided to upgrade to the latest version of Tailscale in case it was now out of date.

However, now I cannot log in:

https://github.com/user-attachments/assets/63d03a11-f1f4-4388-92c4-3b980005db80

Using the CLI tool, I am unable to login or bring Tailscale up as it complains the daemon is not running:

```
277966k@M-A009474 ~ % /Applications/Tailscale.app/Contents/MacOS/Tailscale up
2024/10/18 10:31:50 failed to connect to local Tailscale service; is Tailscale running?
277966k@M-A009474 ~ % /Applications/Tailscale.app/Contents/MacOS/Tailscale login
2024/10/18 10:31:56 Failed to connect to local Tailscale daemon for /localapi/v0/profiles/; not running? Error: dial unix /var/run/tailscaled.socket: connect: no such file or directory
277966k@M-A009474 ~ % /Applications/Tailscale.app/Contents/MacOS/Tailscale status
2024/10/18 10:32:09 failed to connect to local Tailscale service; is Tailscale running?
277966k@M-A009474 ~ % /Applications/Tailscale.app/Contents/MacOS/Tailscale bugreport
2024/10/18 10:32:26 Failed to connect to local Tailscale daemon for /localapi/v0/bugreport; not running? Error: dial unix /var/run/tailscaled.socket: connect: no such file or directory
277966k@M-A009474 ~ % /Applications/Tailscale.app/Contents/MacOS/Tailscale version
1.76.1
tailscale commit: 24929f6b611127cdc40d45ef40d75c6afc1fcc4c
other commit: 5e54dcf15265cb83e84e617a5a7e0c1b013c61c7
go version: go1.23.1
```

I have tried removing Tailscale and reinstalling, as well as removing support files in /Library and ~/Library (although it's possible I'm not deleting everything - it no longer asks me to sign in when I reinstall).

How can I debug this further?

### Steps to reproduce

_No response_

### Are there any recent changes that introduced the issue?

_No response_

### OS

macOS

### OS version

14.7

### Tailscale version

1.76.1

### Other software

_No response_

### Bug report

_No response_