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/common/common.kt

@@ -0,0 +1,20 @@
+package test
+
+open class SimpleParent {
+    open fun foo(n: Int) {}
+}
+
+expect open class ExpectedChild : SimpleParent {
+    override fun <caret>foo(n: Int)
+}
+
+class ExpectedChildChild : ExpectedChild() {
+    override fun foo(n: Int) {}
+}
+
+class SimpleChild : SimpleParent() {
+    override fun foo(n: Int) {}
+}
+
+// REF: [common] (in test.ExpectedChildChild).foo(Int)
+// REF: [jvm] (in test.ExpectedChildChildJvm).foo(Int)

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) {}
+}