chrome may crash on shift-click when using -webkit-user-select: none

[sosaucily]

https://bugs.webkit.org/show_bug.cgi?id=114745

This is important because we use this to prevent text selection when using command-shift-click.

Now we only use webkit-user-select: none on the view. putting it on the whole body might be better, but it will crash chrome frequently. Not sure if it crashes with the current use.