[Clang][Sema] Fix __builtin_infer_alloc_token() return type (llvm#168773)

Using the builtin failed on 32-bit architectures:
```
clang/lib/AST/ExprConstant.cpp:14299: [..]: Assertion `I.getBitWidth() == Info.Ctx.getIntWidth(E->getType()) && "Invalid evaluation result."' failed.
```

The return type is meant to be size_t. Fix it.

Author: melver

clang/lib/Sema/SemaChecking.cpp

@@ -1512,7 +1512,7 @@ static bool checkBuiltinInferAllocToken(Sema &S, CallExpr *TheCall) {
       return S.Diag(Arg->getBeginLoc(), diag::err_param_with_void_type);
   }
 
-  TheCall->setType(S.Context.UnsignedLongLongTy);
+  TheCall->setType(S.Context.getSizeType());
   return false;
 }
 

clang/test/SemaCXX/alloc-token.cpp

@@ -3,6 +3,8 @@
 // RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++23 -fsyntax-only -verify %s -fexperimental-new-constant-interpreter
 // RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++23 -fsyntax-only -verify %s -falloc-token-mode=typehash -DMODE_TYPEHASH
 // RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++23 -fsyntax-only -verify %s -falloc-token-max=2 -DTOKEN_MAX=2
+// RUN: %clang_cc1 -triple arm-linux-androideabi -std=c++23 -fsyntax-only -verify %s -falloc-token-max=2 -DTOKEN_MAX=2
+// RUN: %clang_cc1 -triple arm-linux-androideabi -std=c++23 -fsyntax-only -verify %s -falloc-token-max=2 -DTOKEN_MAX=2 -fexperimental-new-constant-interpreter
 
 #if !__has_builtin(__builtin_infer_alloc_token)
 #error "missing __builtin_infer_alloc_token"