[FIR] Make FirErrorConstructor a FirDiagnosticHolder

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

@@ -93,7 +93,7 @@ object BuilderConfigurator : AbstractBuilderConfigurator<FirTreeBuilder>(FirTree
             fields from functionCall
         }
 
-        for (constructorType in listOf("FirPrimaryConstructor", "FirConstructorImpl", "FirErrorConstructor")) {
+        for (constructorType in listOf("FirPrimaryConstructor", "FirConstructorImpl")) {
             builder(constructor, constructorType) {
                 parents += abstractConstructorBuilder
                 defaultNull("delegatedConstructor")
@@ -103,6 +103,14 @@ object BuilderConfigurator : AbstractBuilderConfigurator<FirTreeBuilder>(FirTree
             }
         }
 
+        builder(errorPrimaryConstructor) {
+            parents += abstractConstructorBuilder
+            defaultNull("delegatedConstructor")
+            defaultNull("body")
+            default("contractDescription", "FirEmptyContractDescription")
+            useTypes(emptyContractDescriptionType)
+        }
+
         builder(constructor, "FirConstructorImpl") {
             openBuilder()
             withCopy()

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

@@ -124,6 +124,7 @@ object FirTreeBuilder : AbstractFirTreeBuilder() {
     val errorExpression by element(Expression, expression, diagnosticHolder)
     val errorFunction by element(Declaration, function, diagnosticHolder)
     val errorProperty by element(Declaration, variable, diagnosticHolder)
+    val errorPrimaryConstructor by element(Declaration, constructor, diagnosticHolder)
     val danglingModifierList by element(Declaration, declaration, diagnosticHolder)
     val qualifiedAccessExpression by element(Expression, expression, resolvable, contextReceiverArgumentListOwner)
     val qualifiedErrorAccessExpression by element(Expression, expression, diagnosticHolder)

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

@@ -26,9 +26,9 @@ object ImplementationConfigurator : AbstractFirTreeImplementationConfigurator()
             defaultTrue("isPrimary", withGetter = true)
         }
 
-        impl(constructor, "FirErrorConstructor") {
+        impl(errorPrimaryConstructor) {
             publicImplementation()
-            defaultFalse("isPrimary", withGetter = true)
+            defaultTrue("isPrimary", withGetter = true)
         }
 
         impl(outerClassTypeParameterRef) {