Rename "AnyOf" and "AllOf" combined predicates to "Or" and "And", respectively.

Rename "AnyOf" and "AllOf" combined predicates to "Or" and "And", respectively.

    This reduces conflict between these and other type names, where we're moving towards "Of" indicating a container type containing certain types. It also better matches the "Neg" predicate modifier and generally is pretty understandable/readable for predicates.

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PiperOrigin-RevId: 249076508