Use message ID instead of timestamp when finding narrowed pointer.
Use message ID instead of timestamp when finding narrowed pointer.

We don't need to look up a message here.

zulip/zulip-android,saketkumar95/zulip-android,saketkumar95/zulip-android,vishwesh3/zulip-android,prati0100/zulip-android,abhaymaniyar/zulip-android,Sam1301/zulip-android,Sam1301/zulip-android,abhaymaniyar/zulip-android,prati0100/zulip-android