`getValue` -> `value`
`getValueOr` -> `value_or`
`hasValue` -> `has_value`
`map` -> `transform`
The old API will be deprecated in the rebranch.
To avoid merge conflicts, use the new API already in the main branch.
rdar://102362022
When there are no non-type dead args, DeadArgumentTransform should not
specialize the function. While marking dead type args as not dead, make
sure we go over all the args.
If not, a dead type arg will be attempted to be deleted later on in
FunctionSignatureTransform::DeadArgumentFinalizeOptimizedFunction.
