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

- KT-7586 Strange navigation issue

 #KT-7586 Fixed

compiler/testData/diagnostics/testsWithStdLib/duplicateJvmSignature/jvmOverloads.kt

@@ -1,6 +1,6 @@
 // !DIAGNOSTICS: -UNUSED_PARAMETER
-class <!CONFLICTING_JVM_DECLARATIONS!>A<!> {
-    [kotlin.jvm.overloads] fun foo(s: String = "") {
+class A {
+    <!CONFLICTING_JVM_DECLARATIONS!>[kotlin.jvm.overloads] fun foo(s: String = "")<!> {
     }
 
     <!CONFLICTING_JVM_DECLARATIONS!>fun foo()<!> {