[IROutliner] Adding support for swift errors in the IROutliner

Since some values can be swift errors, we need to make sure that we
correctly propagate the parameter attributes.

Tests found at:
llvm/test/Transforms/IROutliner/outlining-swift-error.ll

Reviewers: jroelofs, paquette

Recommit of: 71867ed5

Differential Revision: https://reviews.llvm.org/D87742