Misc: Support light-methodless members in overrider search

In particular, support line markers for expect-class members
and navigation to expect-class members from corresponding base members

idea/testData/navigation/implementations/multiModule/expectClassFun/jvm/jvm.kt

@@ -0,0 +1,9 @@
+package test
+
+actual open class ExpectedChild : SimpleParent() {
+    actual override fun foo(n: Int) {}
+}
+
+class ExpectedChildChildJvm : ExpectedChild() {
+    override fun foo(n: Int) {}
+}