settings: Make account settings more responsive.
settings: Make account settings more responsive.

The textarea in Settings/User Profile was overflowing in
smaller width devices.

This commit fixes that issue by adding appropriate media queries.

Fixes part of #16817.

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