JS: create new common directory for all generated tests, migrate several tests there

js/js.translator/testData/box/initialize/declarationInitializedWithThrow.kt

@@ -0,0 +1,15 @@
+// See KT-12254
+package foo
+
+object A {
+    var x: Int = throw RuntimeException("catch me")
+}
+
+fun box(): String {
+    try {
+        return "fail: ${A.x.toString()}"
+    }
+    catch (e: RuntimeException) {
+        return if (e.message == "catch me") "OK" else "fail: ${e.message}"
+    }
+}