[LL FIR] add missing file node to control flow graph

The file

^KT-62834 Fixed

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/transformers/LLFirAbstractBodyTargetResolver.kt

@@ -50,11 +50,17 @@ internal abstract class LLFirAbstractBodyTargetResolver(
     }
 
     override fun withScript(firScript: FirScript, action: () -> Unit) {
-        transformer.context.withScript(firScript, transformer.components, action)
+        transformer.declarationsTransformer?.withScript(firScript) {
+            action()
+            firScript
+        }
     }
 
     override fun withFile(firFile: FirFile, action: () -> Unit) {
-        transformer.context.withFile(firFile, transformer.components, action)
+        transformer.declarationsTransformer?.withFile(firFile) {
+            action()
+            firFile
+        }
     }
 
     @Deprecated("Should never be called directly, only for override purposes, please use withRegularClass", level = DeprecationLevel.ERROR)

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/transformers/LLFirBodyLazyResolver.kt

@@ -104,6 +104,7 @@ private class LLFirBodyTargetResolver(
         firResolveContextCollector = firResolveContextCollector,
     ) {
         override val preserveCFGForClasses: Boolean get() = false
+        override val buildCfgForFiles: Boolean get() = false
     }
 
     override fun doResolveWithoutLock(target: FirElementWithResolveState): Boolean {

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/transformers/LLFirImplicitTypesLazyResolver.kt

@@ -65,6 +65,7 @@ internal class LLFirImplicitBodyTargetResolver(
         returnTypeCalculator = createReturnTypeCalculator(firResolveContextCollector = firResolveContextCollector),
     ) {
         override val preserveCFGForClasses: Boolean get() = false
+        override val buildCfgForFiles: Boolean get() = false
     }
 
     override fun doLazyResolveUnderLock(target: FirElementWithResolveState) {

compiler/testData/codegen/box/smartCasts/kt44814.kt

@@ -3,7 +3,6 @@
 // DUMP_IR
 // DUMP_CFG
 // RENDERER_CFG_LEVELS
-// MUTE_LL_FIR: KT-62834
 
 class FlyweightCapableTreeStructure