Add test for KT-5554: coerce arrays in return

#KT-5554 Fixed

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/kt5554OnlyIntsShouldBeCoerced.kt

@@ -0,0 +1,9 @@
+package kt5554OnlyIntsShouldBeCoerced
+
+fun main(args: Array<String>) {
+    //Breakpoint!
+    args.size
+}
+
+// EXPRESSION: Class.forName("java.lang.Object").getGenericInterfaces()
+// RESULT: instance of java.lang.Class[0] (id=ID): [Ljava/lang/Class;