Release 1.63.1

Fixes

• give the Desktop canvas a width floor so side panels can't push it into mobile layout ([476b1ba](https://github.com/TheFlowOps-Eng/fo-class-experience/commit/476b1ba1ca41d837cbd282fdcd1f2dcdc14d0364))

• preserve scroll fraction when the canvas iframe's height changes ([6e8395c](https://github.com/TheFlowOps-Eng/fo-class-experience/commit/6e8395c08d96bc1b2e42f5eeb027fa0a77a5d49a))