added info about smart casts to diagnostic tests

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/UnaryExpression.kt

@@ -5,10 +5,10 @@ fun foo() {
     val x: Int? = null
 
     bar(<!UNSAFE_CALL!>-<!>x)
-    if (x != null) bar(-x)
+    if (x != null) bar(-<!DEBUG_INFO_AUTOCAST!>x<!>)
     bar(<!UNSAFE_CALL!>-<!>x)
 
     val b: Boolean? = null
     baz(<!UNSAFE_CALL!>!<!>b)
-    if (b != null) baz(!b)
+    if (b != null) baz(!<!DEBUG_INFO_AUTOCAST!>b<!>)
 }