ConeTypeContext: use built-in nullable any type

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/types/ConeTypeContext.kt

@@ -461,9 +461,7 @@ interface ConeTypeContext : TypeSystemContext, TypeSystemOptimizationContext, Ty
     override fun TypeParameterMarker.getRepresentativeUpperBound(): KotlinTypeMarker {
         require(this is FirTypeParameterSymbol)
         return this.fir.bounds.getOrNull(0)?.let { (it as? FirResolvedTypeRef)?.type }
-            ?: ConeClassLikeTypeImpl(
-                ConeClassLikeLookupTagImpl(ClassId.topLevel(KotlinBuiltIns.FQ_NAMES.any.toSafe())), emptyArray(), true
-            )
+            ?: session.builtinTypes.nullableAnyType.type
     }
 
     override fun KotlinTypeMarker.getSubstitutedUnderlyingType(): KotlinTypeMarker? {