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

[Saleem Abdulrasool via cfe-commits]

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@@ -0,0 +1,2 @@
+#include <FrameworkWithActualPrivateModule/FrameworkWithActualPrivateModule.h>
+extern int FrameworkWithActualPrivateModule_Private;
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compnerd wrote:

Missing newline

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