Code fragment analysis: analyze parents if there's no sensible scope for the default element (KT-29179)

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/kt29179.kt

@@ -0,0 +1,21 @@
+package kt29179
+
+class A {
+    val a = 1
+    fun bar() = 2
+    fun foo() {
+        3
+            //Breakpoint!
+            .toString()
+    }
+}
+
+fun main() {
+    A().foo()
+}
+
+// EXPRESSION: bar()
+// RESULT: 2: I
+
+// EXPRESSION: this
+// RESULT: instance of kt29179.A(id=ID): Lkt29179/A;

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/kt29179.out

@@ -0,0 +1,9 @@
+LineBreakpoint created at kt29179.kt:9
+Run Java
+Connected to the target VM
+kt29179.kt:9
+Compile bytecode for bar()
+Compile bytecode for this
+Disconnected from the target VM
+
+Process finished with exit code 0