Support KType.javaType in stdlib

#KT-32241 Fixed

libraries/stdlib/jvm/build.gradle

@@ -132,6 +132,8 @@ compileTestKotlin {
                 "-Xopt-in=kotlin.ExperimentalUnsignedTypes",
                 "-Xopt-in=kotlin.ExperimentalStdlibApi",
         ]
+        // This is needed for JavaTypeTest; typeOf for non-reified type parameters doesn't work otherwise, for implementation reasons.
+        freeCompilerArgs.remove("-Xno-optimized-callable-references")
     }
 }