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

idea/testData/debugger/fileRanking/topLevel.kt

@@ -0,0 +1,25 @@
+// WITH_RUNTIME
+
+//FILE: a/a.kt
+package a
+
+val a = run {
+    val a = 5
+    val b = run {
+        val c = 2
+    }
+    5
+}
+
+fun x() {
+    println("")
+}
+
+//FILE: b/a.kt
+package b
+
+val b = 5
+
+fun y() {
+    println("")
+}