Flip --incompatible_blacklisted_protos_requires_proto_info

[Yannic]

Fixes #11694

[lberki]

What about the big pile of failing presubmits?

[Yannic]

The Bazel repo wasn't ready for flipping the flag yet, upgrading Protobuf to 3.13.0 fixed that (#12108). bazel_proto_library_test is still failing on RBE (but not anywhere else). Not sure why yet.

@lberki Could you already run this through internal presubmit to see whether there's anything needed before we can merge it for Bazel 4.0?

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[googlebot]

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[Yannic]

(sorry this requested so many reviewers, I made a mistake when rebase the change)