[Wasm] Add box and stdlib tests in wasi mode

wasm/wasm.tests/_commonFiles/fail.kt

@@ -0,0 +1,7 @@
+package kotlin
+// This file should be excluded from tests using StdLib, as these methods conflict with corresponding methods from kotlin.test
+// see StdLibTestBase.removeAdHocAssertions
+
+fun fail(message: String? = null): Nothing {
+    throw Throwable(message)
+}