Add origin for generated jvm overloads and tweak equals methods to distinguish them

- KT-7586 Strange navigation issue

 #KT-7586 Fixed

idea/testData/kotlinAndJavaChecker/JvmOverloadsFunctions.java

@@ -0,0 +1,13 @@
+import test.kotlin.A;
+
+import static test.kotlin.KotlinPackage.foo;
+
+class JvmOverloadsFunctions {
+    public static void main(String[] args) {
+        A a = new A() { };
+
+        foo(a.getClass(), a, true, "Some");
+        foo(a.getClass(), a, true);
+        foo(a.getClass(), a);
+    }
+}