chore: move react from devDependency to dependency in design system starter template (#8159)
### Description
I mentioned this in discussions, in the design system starter template,
react was specified as a devDependency rather than a dependency.
It needs to be moved to dependencies.
https://github.com/vercel/turbo/discussions/8156
### Testing Instructions
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Co-authored-by: Anthony Shew <anthony.shew@vercel.com>