[clang] [APINotes] Upstream the remaining API Notes fixes and tests (PR #84773)

[Saleem Abdulrasool via cfe-commits]

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@@ -0,0 +1,6 @@
+// RUN: rm -rf %t
+// RUN: not %clang_cc1 -fsyntax-only -fapinotes  %s -I %S/Inputs/BrokenHeaders2 2>&1 | FileCheck %s
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compnerd wrote:

Extra space after `-fapinotes`

https://github.com/llvm/llvm-project/pull/84773