[clang-tools-extra] [clang-tidy] Allow type-generic builtins in pro-type-vararg check (PR #178656)

[via cfe-commits]

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@@ -178,6 +178,15 @@ void ProTypeVarargCheck::check(const MatchFinder::MatchResult &Result) {
   if (const auto *Matched = Result.Nodes.getNodeAs<CallExpr>("callvararg")) {
     if (hasSingleVariadicArgumentWithValue(Matched, 0))
       return;
+
+    // Skip builtins with custom type checking - they use variadics as an
+    // implementation detail to accept multiple types, not for C-style varargs.
----------------
zeyi2 wrote:

```suggestion
    // implementation detail to accept multiple types, not for C-style varargs.
    // TODO: Remove some of the entries from the `AllowedVariadics` list.
```

https://github.com/llvm/llvm-project/pull/178656