Define and use TOR_ADDRPORT_BUF_LEN
In #33918 (moved), we discovered a bug where IPv6 addresses were being truncated in logs.
During the fix, we noticed that we had a TOR_ADDR_BUF_LEN, but no equivalent constant for addresses and ports. The new TOR_ADDRPORT_BUF_LEN should allow space for:
- TOR_ADDR_BUF_LEN
- IPv6 brackets (2, if not included in TOR_ADDR_BUF_LEN already)
- the port separator (1)
- the port (5)
We should check for other truncation errors while making this change.
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