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/multiModuleLineMarker/hierarchyWithExpectClassPlatformSide/common/common.kt

@@ -2,10 +2,22 @@
 
 package test
 
-open class <caret>SimpleParent
+open class SimpleParent {
+    open fun foo(n: Int) {}
+    open val bar: Int get() = 1
+}
 
-expect open class ExpectedChild : SimpleParent
+expect open class ExpectedChild : SimpleParent {
+    override fun foo(n: Int)
+    override val bar: Int
+}
 
-class ExpectedChildChild : ExpectedChild()
+class ExpectedChildChild : ExpectedChild() {
+    override fun foo(n: Int) {}
+    override val bar: Int get() = 1
+}
 
-class SimpleChild : SimpleParent()
+class SimpleChild : SimpleParent() {
+    override fun foo(n: Int) {}
+    override val bar: Int get() = 1
+}