Debugger: Do not assume we are inside the class body when in '}' (KT-15259)

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/kt15259.kt

@@ -0,0 +1,14 @@
+package kt15259
+
+interface ObjectFace
+
+private fun makeFace() = object : ObjectFace {
+//Breakpoint!
+}
+
+fun main() {
+    makeFace()
+}
+
+// EXPRESSION: this
+// RESULT: 'this' is not defined in this context

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/kt15259.out

@@ -0,0 +1,7 @@
+LineBreakpoint created at kt15259.kt:7
+Run Java
+Connected to the target VM
+kt15259.kt:7
+Disconnected from the target VM
+
+Process finished with exit code 0