port 8384 clashes with Syncthing!

### What is the issue?

Just noticed the misfortune that 8384 is used by Synthing
Not that this is important, but I don't see an explicit report issue here, so I thought I'd mention.

```
$ tailscale status --web
listen tcp 127.0.0.1:8384: bind: address already in use

```
```
USAGE
tailscale status [--active] [--web]
--listen string
listen address for web mode; use port 0 for automatic (default 127.0.0.1:8384)

```

### Steps to reproduce

_No response_

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

_No response_

### OS

_No response_

### OS version

_No response_

### Tailscale version

_No response_

### Other software

_No response_

### Bug report

_No response_