[@types/react] Deprecate ReactComponentElement

[mattpocock]

There are no references to it elsewhere in the React types.

I can't see a reason why it should exist, so we should deprecate it with an eye to removing it.

[typescript-bot]

Thanks for the discussion about "react", some useful links for everyone:

• npm
• DT
• Related discussions

Pinging the DT module owners: @johnnyreilly, @bbenezech, @pzavolinsky, @ericanderson, @DovydasNavickas, @theruther4d, @guilhermehubner, @ferdaber, @jrakotoharisoa, @pascaloliv, @Hotell, @franklixuefei, @Jessidhia, @saranshkataria, @lukyth, @eps1lon, @zieka, @dancerphil, @dimitropoulos, @disjukr, @vhfmag, @hellatan, @priyanshurav, @Semigradsky.

[eps1lon]

Good catch. Can you file a PR deprecating it and then I add it to #64451

[ghost]

Deprecated in PR #68463