portico: Fix scrollbar appears for `not long` domain name.
portico: Fix scrollbar appears for `not long` domain name.

Fixes #9516.
Scrollbar appeared in the subdomain input box while registering an
org. This is a hacky solution to the problem and doesn't work for
long domain names. A proper fix for the same should be provided in
the future.

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