[PATCH] D144627: [Clang] Fix a crash when taking the address of a consteval lambda

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The `_invoke` function of lambdas was not respecting
the constexpr/consteval specifier of the call operator, so it was possible
to take its address in a non-immmediately invoked context,
even if the call operator was itself consteval.

In addition, we improve the diagnostic emmited in the lambda case
not to show that `invoke` method.

Fixes #57682


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D144627

Files:
  clang/include/clang/Basic/DiagnosticSemaKinds.td
  clang/lib/Sema/SemaExpr.cpp
  clang/lib/Sema/SemaLambda.cpp
  clang/test/AST/ast-dump-expr-json.cpp
  clang/test/AST/ast-dump-expr.cpp
  clang/test/AST/ast-dump-lambda.cpp
  clang/test/SemaCXX/cxx2a-consteval.cpp

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