Unused symbol: do not report for @JsName annotated declarations

#KT-17368 Fixed

idea/testData/inspectionsLocal/unusedSymbol/jsName.kt

@@ -0,0 +1,12 @@
+// PROBLEM: none
+// JS
+class Person(val name: String) {
+    fun hello() {
+        println("Hello $name!")
+    }
+
+    @JsName("helloWithGreeting")
+    fun <caret>hello(greeting: String) {
+        println("$greeting $name!")
+    }
+}