recent_topics: Don't switch focus to input on `k` / `j` keypress.
recent_topics: Don't switch focus to input on `k` / `j` keypress.

Don't focus on search box when user is at end or start of
the table and is using vim keys. This ends up being a
bad UX as once user is inside the search box, vim
navigation keys cannot be used to take user out of
the search box.

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