message_flags: Add coverage to setTimeout call from send_read.
message_flags: Add coverage to setTimeout call from send_read.

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