retention: Eliminate redundant userprofile JOIN from cross-realm query.
retention: Eliminate redundant userprofile JOIN from cross-realm query.

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