JS: move expressions test to box tests

js/js.translator/testData/box/expression/invoke/invokeOnExprByConvention.kt

@@ -0,0 +1,19 @@
+package foo
+
+class A {
+    operator fun invoke() = "##"
+    operator fun invoke(i: Int) = "#${i}"
+}
+
+fun foo() = A()
+
+fun box(): String {
+    if (A()() != "##") return "fail1"
+    if (A()(1) != "#1") return "fail2"
+    if (foo()() != "##") return "fail3"
+    if (foo()(42) != "#42") return "fail4"
+    if ((foo())(42) != "#42") return "fail5"
+    if ({ -> A()}()() != "##") return "fail6"
+    if ({ -> A()}()(37) != "#37") return "fail7"
+    return "OK"
+}