[6.3] Implement BasicMacroExpansionContext.buildConfiguration#3228

jmschonfeld merged 1 commit intoswiftlang:release/6.3swiftlang/swift-syntax:release/6.3from

jmschonfeld:6.3/basicmacroexpansioncontext-buildconfigjmschonfeld/swift-syntax:6.3/basicmacroexpansioncontext-buildconfigCopy head branch name to clipboard