[web] Attempt to fix long-right-angle-arrow
Summary: Attempted to fix the long-right-angle-arrow SVG to avoid the weird artifacts that were showing up in Safari.
Test Plan:
This seemed to work for me, would be good for @benschac to patch this and take another look.
Reviewers: def-au1t, palys-swm, benschac
Reviewed By: palys-swm, benschac
Subscribers: ashoat, Adrian, karol-bisztyga, yayabosh, benschac
Differential Revision: https://phabricator.ashoat.com/D3843