[v5] Some icons display upside-down

[adidahiya]

Environment

• Package version(s): core v5.0.0-alpha.3, icons v5.0.0-alpha.2
• Operating System: macOS
• Browser name and version: Chrome

Code Sandbox

https://output.circle-artifacts.com/output/job/e97e9789-1843-4884-830b-230e41ed85ce/artifacts/0/packages/docs-app/dist/index.html#core/components/control-group

Steps to reproduce

Go to v5 docs > Control group CSS API example

Actual behavior

Expected behavior

Those icons should display right-side up

Possible solution

There's a scaleY(-1) style which works for icons loaded by the new IconLoader, but is not backwards-compatible with static markup from Blueprint v4.x