[ClangImporter] Look through __ended_by and __null_terminated (#81630)#82003

hnrklssn merged 3 commits intoswiftlang:release/6.2swiftlang/swift:release/6.2from

hnrklssn:ignore-unused-bounds-attributes-6.2hnrklssn/swift:ignore-unused-bounds-attributes-6.2Copy head branch name to clipboard