[clang] [Clang] Backport P2741R3 (static_assert with user-generated message) to C++11 (PR #102044)

[Mital Ashok via cfe-commits]

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@@ -105,6 +105,11 @@ C2y Feature Support
 C23 Feature Support
 ^^^^^^^^^^^^^^^^^^^
 
+Non-comprehensive list of changes in this release
+-------------------------------------------------
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MitalAshok wrote:

https://github.com/llvm/llvm-project/commit/10c6d6349e51bb245b9deec4aafca9885971135b#r145075257

Looks like this was removed by accident. We should probably wait for a separate NFC patch to add this so there's no chance of it getting reverted again

https://github.com/llvm/llvm-project/pull/102044