Presentation: Add file name to the presentation of private top-level declaration

#KT-13838 Fixed

idea/testData/navigation/gotoSymbol/privateTopLevelDeclarations.kt

@@ -0,0 +1,19 @@
+package foo.bar
+
+private class test
+
+private fun Int.test() = 1
+
+private fun test() = 2
+
+private val Int.test: Int
+    get() = 3
+
+private val test = 4
+
+// SEARCH_TEXT: test
+// REF: (for Int in privateTopLevelDeclarations.kt in foo.bar).test
+// REF: (for Int in privateTopLevelDeclarations.kt in foo.bar).test()
+// REF: (privateTopLevelDeclarations.kt in foo.bar).test
+// REF: (privateTopLevelDeclarations.kt in foo.bar).test
+// REF: (privateTopLevelDeclarations.kt in foo.bar).test()