[FIR] add replaceStatements to FirScript

It is required to implement StateKeeper for scripts
statements should be MutableOrEmptyList to avoid CME

^KT-60728
^KT-60519

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/declarations/FirScript.kt

@@ -41,6 +41,8 @@ abstract class FirScript : FirDeclaration() {
 
     abstract override fun replaceAnnotations(newAnnotations: List<FirAnnotation>)
 
+    abstract fun replaceStatements(newStatements: List<FirStatement>)
+
     abstract override fun <D> transformAnnotations(transformer: FirTransformer<D>, data: D): FirScript
 
     abstract fun <D> transformStatements(transformer: FirTransformer<D>, data: D): FirScript

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/declarations/builder/FirScriptBuilder.kt

@@ -59,7 +59,7 @@ class FirScriptBuilder : FirAnnotationContainerBuilder {
             origin,
             attributes,
             name,
-            statements,
+            statements.toMutableOrEmpty(),
             symbol,
             parameters,
             contextReceivers.toMutableOrEmpty(),

compiler/fir/tree/gen/org/jetbrains/kotlin/fir/declarations/impl/FirScriptImpl.kt

@@ -39,7 +39,7 @@ internal class FirScriptImpl(
     override val origin: FirDeclarationOrigin,
     override val attributes: FirDeclarationAttributes,
     override val name: Name,
-    override val statements: MutableList<FirStatement>,
+    override var statements: MutableOrEmptyList<FirStatement>,
     override val symbol: FirScriptSymbol,
     override val parameters: MutableList<FirVariable>,
     override var contextReceivers: MutableOrEmptyList<FirContextReceiver>,
@@ -79,4 +79,8 @@ internal class FirScriptImpl(
     override fun replaceAnnotations(newAnnotations: List<FirAnnotation>) {
         annotations = newAnnotations.toMutableOrEmpty()
     }
+
+    override fun replaceStatements(newStatements: List<FirStatement>) {
+        statements = newStatements.toMutableOrEmpty()
+    }
 }

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/NodeConfigurator.kt

@@ -489,7 +489,7 @@ object NodeConfigurator : AbstractFieldConfigurator<FirTreeBuilder>(FirTreeBuild
 
         script.configure {
             +name
-            +fieldList(statement).withTransform()
+            +fieldList(statement, withReplace = true, useMutableOrEmpty = true).withTransform()
             +symbol("FirScriptSymbol")
             +fieldList("parameters", variable, withReplace = false)
             +fieldList(contextReceiver, useMutableOrEmpty = true)