React 19: Update React dependencies

[tlabaj]

Describe the enhancement or change
A clear and concise description of the request. What is the expected outcome?

Once all work is done to fixing breaking changes in the Repo, update the React dependencies so that the repo is using React 19, and individual packages support onl 18 or 19.

Any additional work needed to get the workspace building and working will require followup issues.

Would include react, react-dom, and most likely @types/react-dom (latest is version 19.0.3) and @types/react (latest version is 19.0.8).

[kmcfaul]

Bumping to 19 is blocked by docs-framework dependency react-ssr-prepass which does not support React 19 (and doesn't look like it will be updated any time soon). Will we have to either refactor the docs-framework to use another solution for prerendering, or time the bump to React 19 with the docs-core migration.

Repo should still be able to support React 19 to unblock users on it.