JS: move expressions test to box tests

js/js.translator/testData/box/expression/misc/throwThrow.kt

@@ -0,0 +1,16 @@
+package foo
+
+fun test() {
+    throw throw Exception("catch me")
+}
+
+fun box(): String {
+    try {
+        test()
+        error("exception not thrown")
+    }
+    catch (e: Exception) {
+        assertEquals("catch me", e.message)
+    }
+    return "OK"
+}