[swift/main] Fix word boundary matching in `matches(of:)`#745

natecook1000 merged 2 commits intoswift/mainswiftlang/swift-experimental-string-processing:swift/mainfrom

swiftmain_word-boundary-subject-boundsswiftlang/swift-experimental-string-processing:swiftmain_word-boundary-subject-boundsCopy head branch name to clipboard