[JS FIR] Enable warnings and infos for JS FIR tests

compiler/testData/diagnostics/testsWithJsStdLib/export/genericClassWithInner.kt

@@ -0,0 +1,14 @@
+// FIR_IDENTICAL
+// !OPT_IN: kotlin.js.ExperimentalJsExport
+// !RENDER_DIAGNOSTICS_MESSAGES
+import kotlin.js.JsExport
+
+@JsExport
+class ClassA<T : UpperBoundInterface>  {
+    inner class InnerA {
+
+    }
+}
+
+@JsExport
+interface UpperBoundInterface {}