FIR IDE: generate lazy initializers for properties

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

@@ -368,7 +368,7 @@ object NodeConfigurator : AbstractFieldConfigurator<FirTreeBuilder>(FirTreeBuild
             parentArg(callableDeclaration, "F", "F")
             +name
             +symbol("FirVariableSymbol", "F")
-            +initializer.withTransform()
+            +initializer.withTransform().withReplace()
             +field("delegate", expression, nullable = true).withTransform()
             +field("delegateFieldSymbol", delegateFieldSymbolType, "F", nullable = true)
             generateBooleanFields("var", "val")

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

@@ -92,4 +92,8 @@ fun Field.withTransform(needTransformInOtherChildren: Boolean = false): Field =
     this.needTransformInOtherChildren = needTransformInOtherChildren
 }
 
+fun Field.withReplace(): Field = copy().apply {
+    withReplace = true
+}
+
 fun FieldSet.withTransform(): FieldSet = this.map { it.withTransform() }