URL displayed on startup ignores host argument

[jxrossel]

Very small issue: when specifying the host in the call to set_trace, e.g. web_pdb.set_trace(host="127.0.0.1"), the displayed log remains:

2024-12-24 08:28:13,758|CRITICAL|root.__init__:77|Web-PDB: starting web-server on http://<my_machine>:5555

This is due to web_console.py:78 where gethostname() is used even if host is provided

[romanvm]

host argument specifies IP address binding for underlying socket, so it's not always the IP address of the actual host. E.g. it may be '0.0.0.0' for receiving connections from all addresses.