[clang] [clang] Rework `hasBooleanRepresentation`. (PR #136038)

[Michele Scandale via cfe-commits]

================
@@ -8623,6 +8624,13 @@ inline bool Type::isIntegralOrEnumerationType() const {
 inline bool Type::isBooleanType() const {
   if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
     return BT->getKind() == BuiltinType::Bool;
+  if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) {
----------------
michele-scandale wrote:

>From a local run of `check-clang` there are no tests failing with this part of the code.


https://github.com/llvm/llvm-project/pull/136038