[clang] [clang][repl] fix `new` on Mac M1 (PR #69072)

[Maksim Levental via cfe-commits]

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@@ -20,4 +20,6 @@ auto r2 = printf("S[f=%f, m=0x%llx]\n", s.f, reinterpret_cast<unsigned long long
 inline int foo() { return 42; }
 int r3 = foo();
 
+#include <memory>
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makslevental wrote:

This was to test (since `<memory>` transitively includes `<new>`).

https://github.com/llvm/llvm-project/pull/69072