Debugger: Remove false-positive assertion (KT-24343)

idea/testData/debugger/tinyApp/src/stepping/stepOver/kt24343.kt

@@ -0,0 +1,10 @@
+package kt24343
+
+fun main(args: Array<String>) {
+    val list = listOf(1, 2)
+    //Breakpoint!
+    list.map { it + 1 }
+    println()
+}
+
+// STEP_OVER: 1

idea/testData/debugger/tinyApp/src/stepping/stepOver/kt24343.out

@@ -0,0 +1,10 @@
+LineBreakpoint created at kt24343.kt:6
+Run Java
+Connected to the target VM
+kt24343.kt:6
+kt24343.kt:6
+resuming kt24343.kt:6
+Disconnected from the target VM
+
+Process finished with exit code 0
+