Rename: auto cast -> smart cast

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/kt4332WhenBranches.kt

@@ -1,9 +1,9 @@
-//KT-4332 when/autocast underperforms
+//KT-4332 when/smartcast underperforms
 
 fun testWhen(t: String?, x: String?): Int {
     return when {
         t == null -> 0
-        x == null -> <!DEBUG_INFO_AUTOCAST!>t<!>.length // Wrong error report here. t can be inferred as not-null. (And it actually does if you replace when with if/else if)
-        else -> (<!DEBUG_INFO_AUTOCAST!>t<!> + x).length
+        x == null -> <!DEBUG_INFO_SMARTCAST!>t<!>.length // Wrong error report here. t can be inferred as not-null. (And it actually does if you replace when with if/else if)
+        else -> (<!DEBUG_INFO_SMARTCAST!>t<!> + x).length
     }
 }