Track lambda parameters in inbound data flow analysis

idea/testData/slicer/inflow/lambdaImplicitParameter.kt

@@ -0,0 +1,11 @@
+// FLOW: IN
+
+fun foo(f: (Int) -> Unit): Int {
+    return f(1)
+}
+
+fun test() {
+    foo {
+        println(<caret>it)
+    }
+}