Debugger: Navigate to the right file in MPP projects (#KT-25152, #KT-25147)

idea/testData/debugger/fileRanking/simple.kt

@@ -0,0 +1,13 @@
+//FILE: a/a.kt
+class A {
+    fun a() {
+        System.out.println("a")
+    }
+}
+
+//FILE: b/a.kt
+class B {
+    fun b() {
+        System.out.println("b")
+    }
+}