Internet connectivity drops when transitioning from Cellular to Wi-Fi

### What is the issue?

I frequently lose connectivity when transferring from Cellular to Wi-Fi. The only fix is to temporarily disable Tailscale and re-enable it after a period of time.

Attaching a bug report from when this recently occurred (about 10 minutes prior to snagging the ID). Note that although this is from an older Tailscale version, it still occurs on the latest version.

### Steps to reproduce

1. Be on a cellular network
2. (MAYBE) enter a period of low or missing cellular connectivity (unsure if this is necessary)
3. Transition to a WiFi network

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

_No response_

### OS

iOS

### OS version

17.2.1

### Tailscale version

1.58.2

### Other software

_No response_

### Bug report

BUG-4b71e5c143e1f53da5df9d03c918df937301f3fdc2f3ce1aff9231ddd5ecbf5a-20240121182406Z-c750db72c157ab31