Add test for smart step into in method with default args

#KT-4803 In Progress

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

@@ -0,0 +1,17 @@
+LineBreakpoint created at smartStepIntoFunWithDefaultArgs.kt:17
+LineBreakpoint created at smartStepIntoFunWithDefaultArgs.kt:22
+LineBreakpoint created at smartStepIntoFunWithDefaultArgs.kt:27
+LineBreakpoint created at smartStepIntoFunWithDefaultArgs.kt:32
+!JDK_HOME!\bin\java -agentlib:jdwp=transport=dt_socket,address=!HOST_NAME!:!HOST_PORT!,suspend=y,server=n -Dfile.encoding=!FILE_ENCODING! -classpath !OUTPUT_PATH!;!KOTLIN_RUNTIME!;!CUSTOM_LIBRARY!;!RT_JAR! smartStepIntoFunWithDefaultArgs.SmartStepIntoFunWithDefaultArgsKt
+Connected to the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
+smartStepIntoFunWithDefaultArgs.kt:17
+smartStepIntoFunWithDefaultArgs.kt:4
+smartStepIntoFunWithDefaultArgs.kt:22
+smartStepIntoFunWithDefaultArgs.kt:4
+smartStepIntoFunWithDefaultArgs.kt:27
+smartStepIntoFunWithDefaultArgs.kt:8
+smartStepIntoFunWithDefaultArgs.kt:32
+smartStepIntoFunWithDefaultArgs.kt:8
+Disconnected from the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
+
+Process finished with exit code 0

idea/testData/debugger/tinyApp/src/stepping/custom/smartStepIntoFunWithDefaultArgs.kt

@@ -0,0 +1,33 @@
+package smartStepIntoFunWithDefaultArgs
+
+fun Int.foo(a: Int = 1) {
+    val a = 1
+}
+
+fun Int.foo(a: String, b: Int = 1) {
+    val a = 1
+}
+
+fun bar() = 1
+
+fun main(args: Array<String>) {
+    // SMART_STEP_INTO_BY_INDEX: 2
+    // RESUME: 1
+    //Breakpoint!
+    bar().foo(2)
+
+    // SMART_STEP_INTO_BY_INDEX: 2
+    // RESUME: 1
+    //Breakpoint!
+    bar().foo()
+
+    // SMART_STEP_INTO_BY_INDEX: 2
+    // RESUME: 1
+    //Breakpoint!
+    bar().foo("1", 2)
+
+    // SMART_STEP_INTO_BY_INDEX: 2
+    // RESUME: 1
+    //Breakpoint!
+    bar().foo("1")
+}