[libcxxabi] [llvm] [libc++abi] Avoid raw calls to assert() in libc++abi (PR #71121)

[Nick Desaulniers via llvm-commits]

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@@ -19,8 +19,8 @@
 #include "DemangleConfig.h"
 #include "StringViewExtras.h"
 #include "Utility.h"
+#include <__cxxabi_config.h>
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nickdesaulniers wrote:

^ I had been avoiding this change when copying over the internal copy; not sure what harm it has if any, but perhaps worth looking into.

https://github.com/llvm/llvm-project/pull/71121