[FIR] Support PreliminaryLoopVisitor in FIR DFA

compiler/testData/diagnostics/tests/smartCasts/variables/lambdaBetweenArguments.fir.kt

@@ -6,5 +6,5 @@ fun foo(x: Int, f: () -> Unit, y: Int) {}
 fun bar() {
     var x: Int?
     x = 4
-    foo(x, { x = null; x<!UNSAFE_CALL!>.<!>hashCode() }, x)
+    <!INAPPLICABLE_CANDIDATE!>foo<!>(x, { x = null; x<!UNSAFE_CALL!>.<!>hashCode() }, x)
 }

compiler/testData/diagnostics/tests/smartCasts/variables/varChangedInLoop.fir.kt

@@ -2,8 +2,8 @@ public fun foo() {
     var i: Any = 1
     if (i is Int) {
         while (i != 10) {
-            i++      // Here smart cast should not be performed due to a successor
+            i<!UNRESOLVED_REFERENCE!>++<!>      // Here smart cast should not be performed due to a successor
             i = ""
         }
     }
-}
+}

compiler/testData/diagnostics/tests/smartCasts/variables/varNotChangedInLoop.fir.kt

@@ -2,7 +2,7 @@ public fun foo() {
     var i: Any = 1
     if (i is Int) {
         while (i != 10) {
-            i++
+            i<!UNRESOLVED_REFERENCE!>++<!>
         }
     }
-}
+}

compiler/testData/diagnostics/tests/smartCasts/variables/whileWithBreak.fir.kt

@@ -13,5 +13,5 @@ fun list(start: String) {
         e = e.next()
     }
     // e can never be null but we do not know it
-    e.hashCode()
-}
+    e<!UNSAFE_CALL!>.<!>hashCode()
+}