Update import script to handle Property 1=X name format

[mathjoh]

Some icons had a different name format. Instead of Size=x, it was Property 1=X. This PR includes an update to the import script and the icon updates from running a new import.

[pearofducks]

I don't think we want to adjust the script and incurr more tech debt and more potential problems with the "contract" between the Figma sheet and this script.

Rather I think the icon sheet just needs adjustment to conform to the established convention?

Starting a quick chat with the icon implementors to see if this is OK with them or if there's some new thing they're doing that we don't know about – will report back!

edit//wrote

Tomi - looks like the bank icon is using some other naming convention or something? Is that easy to adjust on the Figma icon sheet? Or is there something new y'all are doing that we need to fix on the script?
(We see 'property' instead of 'size' for some attributes, and that pisses the script off bad)

[mathjoh]

Updated the PR @pearofducks