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

js/js.translator/testData/box/defaultArguments/defaultArgumentsInFunctionWithExpressionAsBody.kt

@@ -0,0 +1,17 @@
+// KT-6037: KT-6037 Javascript default function arguments fill code generated in wrong order on method without "return keyword"
+package foo
+
+inline fun <T> id(x: T) = x
+
+fun test(arg: Int = 10) = id(arg)
+
+fun foo(value: String = "K") = "O" + try { value } catch(e: Exception) { "..." }
+
+fun box(): String {
+
+    assertEquals(10, test())
+    assertEquals(100, test(100))
+    assertEquals("OK", foo())
+
+    return "OK"
+}