navbar: Remove :not() text-overflow selector.
navbar: Remove :not() text-overflow selector.

Here we change from using clip to using ellipses on stream name.

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