Using the 'terminal-default' log level a client can request
to get all messages that would normally appear on the terminal.
8c2d73f112 changed the size of the
relevant buffer to 100 lines, which was prone to quickly overflowing
once you enable verbose or debug output.
This size is kept for the early terminal buffer but now enlarged
once a client actually requests this log level. This fixes the overflow
risk while not consuming more resources if this feature is unused.
dcf8adf289