CodeBlockModification...: count file as changed when no changed elements

It means that root PSI (KtFile itself) is changed

So #KT-19726 Fixed
So #KT-20157 Fixed

idea/testData/codeInsight/outOfBlock/WholeFileChanged.kt

@@ -0,0 +1,13 @@
+// TRUE
+// SKIP_ANALYZE_CHECK
+
+fun test() {<caret>
+
+    val someThing: Any? = null
+    val otherThing: Any? = null
+
+    if (!(someThing?.equals(otherThing) ?: otherThing == null)) {
+        // Some comment
+    }
+
+// TYPE: }