preset-env features for 7.14.0

[nicolo-ribaudo]

• Add class static blocks to preset-env's shippedProposals (Add class static blocks to preset-env's shippedProposals #13114)
• Allow compiling #foo in obj without compiling private fields (Allow compiling #foo in obj without compiling private fields #13172)
• Add private brand checks to preset-env's shippedProposals (Add private brand checks to shippedProposals #13176)
• Compile class fields and private methods by default (Enable class fields & private methods by default #13091)
• Mark WeakMaps of private fields as pure (Mark WeakMaps of private fields as pure #13194)

⚠️ Use the "Rebase and merge" button!

[JLHwung]

BTW we don't have a syntax plugin for private brand checks yet.

[babel-bot]

Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/45546/

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[nicolo-ribaudo]

BTW we don't have a syntax plugin for private brand checks yet.

Yeah I noticed while adding it to preset-env, I'm preparing a PR

[nicolo-ribaudo]

Oh also we currently throw when compiling brand checks without compiling private fields 🙃