[clang-tools-extra] [clang-tidy] make `misc-const-correctness` work with `auto` variables and lambdas (PR #157319)

[Victor Chernyakin via cfe-commits]

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@@ -185,6 +185,10 @@ Changes in existing checks
   adding an option to allow pointer arithmetic via prefix/postfix increment or
   decrement operators.
 
+- Improved :doc:`misc-const-correctness
+  <clang-tidy/checks/misc/const-correctness>` check to diagnose
+  variables declared with ``auto``.
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localspook wrote:

I'm not mentioning lambdas because lambdas must be declared with `auto` anyway.

https://github.com/llvm/llvm-project/pull/157319