[clang] Reapply "[Clang] Transform lambda's constraints when instantiating parameter mapping (PR #207966)

[Younan Zhang via cfe-commits]

================
@@ -0,0 +1,123 @@
+// RUN: %clang_cc1 -std=c++2a -verify %s
+// RUN: %clang_cc1 -std=c++2b -verify %s
+// RUN: %clang_cc1 -std=c++2c -verify %s
+
+// expected-no-diagnostics
----------------
zyn0217 wrote:

I asked Claude to help me reduce it to ~30 lines. Thanks for letting me know that!

https://github.com/llvm/llvm-project/pull/207966