blueslip: Correctly type more_info parameter as optional.
blueslip: Correctly type more_info parameter as optional.

This was incorrectly typed as a required argument before.

zulip/zulip,rht/zulip,punchagan/zulip,eeshangarg/zulip,andersk/zulip,rht/zulip,punchagan/zulip,punchagan/zulip,zulip/zulip,kou/zulip,eeshangarg/zulip,eeshangarg/zulip,hackerkid/zulip,rht/zulip,hackerkid/zulip,hackerkid/zulip,zulip/zulip,kou/zulip,eeshangarg/zulip,hackerkid/zulip,kou/zulip,rht/zulip,kou/zulip,hackerkid/zulip,andersk/zulip,zulip/zulip,zulip/zulip,eeshangarg/zulip,andersk/zulip,rht/zulip,kou/zulip,hackerkid/zulip,andersk/zulip,rht/zulip,punchagan/zulip,punchagan/zulip,zulip/zulip,andersk/zulip,punchagan/zulip,hackerkid/zulip,eeshangarg/zulip,punchagan/zulip,rht/zulip,andersk/zulip,zulip/zulip,andersk/zulip,kou/zulip,kou/zulip,eeshangarg/zulip