bugfix: Hide tooltips when switching a narrow.
bugfix: Hide tooltips when switching a narrow.

Fixes #4639.

andersk/zulip,punchagan/zulip,kou/zulip,zulip/zulip,eeshangarg/zulip,timabbott/zulip,rishig/zulip,timabbott/zulip,eeshangarg/zulip,rishig/zulip,punchagan/zulip,brainwane/zulip,andersk/zulip,kou/zulip,brainwane/zulip,brainwane/zulip,synicalsyntax/zulip,tommyip/zulip,hackerkid/zulip,zulip/zulip,kou/zulip,rishig/zulip,timabbott/zulip,brainwane/zulip,showell/zulip,synicalsyntax/zulip,tommyip/zulip,eeshangarg/zulip,zulip/zulip,timabbott/zulip,shubhamdhama/zulip,rishig/zulip,shubhamdhama/zulip,rht/zulip,andersk/zulip,eeshangarg/zulip,showell/zulip,eeshangarg/zulip,showell/zulip,rht/zulip,rht/zulip,zulip/zulip,hackerkid/zulip,shubhamdhama/zulip,hackerkid/zulip,synicalsyntax/zulip,showell/zulip,rishig/zulip,rishig/zulip,punchagan/zulip,shubhamdhama/zulip,kou/zulip,punchagan/zulip,punchagan/zulip,tommyip/zulip,shubhamdhama/zulip,shubhamdhama/zulip,andersk/zulip,andersk/zulip,tommyip/zulip,eeshangarg/zulip,eeshangarg/zulip,andersk/zulip,shubhamdhama/zulip,brainwane/zulip,timabbott/zulip,punchagan/zulip,punchagan/zulip,andersk/zulip,kou/zulip,synicalsyntax/zulip,rishig/zulip,tommyip/zulip,timabbott/zulip,hackerkid/zulip,kou/zulip,rht/zulip,tommyip/zulip,showell/zulip,showell/zulip,zulip/zulip,kou/zulip,tommyip/zulip,synicalsyntax/zulip,brainwane/zulip,zulip/zulip,synicalsyntax/zulip,rht/zulip,rht/zulip,rht/zulip,hackerkid/zulip,timabbott/zulip,hackerkid/zulip,hackerkid/zulip,brainwane/zulip,showell/zulip,synicalsyntax/zulip,zulip/zulip