Debugger: step into default property getter/setter

#KT-7287 Fixed

idea/testData/debugger/tinyApp/outs/defaultAccessors.out

@@ -0,0 +1,22 @@
+LineBreakpoint created at defaultAccessors.kt:5
+!JDK_HOME!\bin\java -agentlib:jdwp=transport=dt_socket,address=!HOST_NAME!:!HOST_PORT!,suspend=y,server=n -Dfile.encoding=!FILE_ENCODING! -classpath !APP_PATH!\classes;!KOTLIN_RUNTIME!;!CUSTOM_LIBRARY!;!RT_JAR! defaultAccessors.DefaultAccessorsPackage
+Connected to the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
+defaultAccessors.kt:5
+defaultAccessors.kt:11
+defaultAccessors.kt:17
+defaultAccessors.kt:11
+defaultAccessors.kt:12
+defaultAccessors.kt:17
+defaultAccessors.kt:13
+defaultAccessors.kt:6
+defaultAccessors.kt:21
+defaultAccessors.kt:22
+simpleLibFile.kt:8
+defaultAccessors.kt:22
+defaultAccessors.kt:23
+simpleLibFile.kt:8
+defaultAccessors.kt:24
+defaultAccessors.kt:7
+Disconnected from the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
+
+Process finished with exit code 0

idea/testData/debugger/tinyApp/src/stepInto/stepInto/defaultAccessors.kt

@@ -0,0 +1,28 @@
+package defaultAccessors
+
+fun main(args: Array<String>) {
+    //Breakpoint!
+    A().testPublicPropertyInClass()
+    testPublicPropertyInLibrary()
+}
+
+class A: B() {
+    fun testPublicPropertyInClass() {
+        prop
+        prop = 2
+    }
+}
+
+open class B {
+    public var prop: Int = 1
+}
+
+fun testPublicPropertyInLibrary() {
+    val myClass = customLib.simpleLibFile.B()
+    myClass.prop
+    myClass.prop = 2
+}
+
+// STEP_INTO: 21
+// SKIP_SYNTHETIC_METHODS: true
+// SKIP_CONSTRUCTORS: true