```
When selecting peers to relay an address to, only pick addrv2-capable ones if the address cannot be represented in addr(v1).
Without this I expect that propagation of torv3 addresses over the cleartext network will be very hard for a while.
```
The parameter is named `_addr` to prevent a shadow warning (just like PushAddress).
Backport of core#20661.
Ref T1696.