Production build should minimize template literal strings

I was lurking through the production build and noticed that the template literal strings were including `\n` and all of the empty white space, specifically here:

https://github.com/dequelabs/cauldron/blob/942ce56153d9497ab09515ed53eddc744324af0c/packages/react/src/components/ExpandCollapsePanel/ExpandCollapsePanel.tsx#L82-L93

We should keep the formatted version for development, but trim + collapse newlines/spaces where we can to reduce the size in production.