events: Update stream objects in "unsubscribed" and "never_subscribed" lists.
events: Update stream objects in "unsubscribed" and "never_subscribed" lists.

rht/zulip,andersk/zulip,zulip/zulip,zulip/zulip,rht/zulip,andersk/zulip,andersk/zulip,zulip/zulip,andersk/zulip,andersk/zulip,rht/zulip,rht/zulip,andersk/zulip,zulip/zulip,rht/zulip,zulip/zulip,andersk/zulip,rht/zulip,rht/zulip,zulip/zulip,zulip/zulip