Introduce FirResolvedTypeRef.delegatedTypeRef to see children types in IDE

This is needed to have access to resolved children types (e.g. type arguments) from IDE

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

@@ -486,13 +486,28 @@ object ImplementationConfigurator : AbstractFirTreeImplementationConfigurator()
             noSource()
         }
 
-        impl(resolvedTypeRef)
+        impl(resolvedTypeRef) {
+            default("delegatedTypeRef") {
+                value = "null"
+            }
+        }
 
         val errorTypeRefImpl = impl(errorTypeRef) {
             default("type", "ConeClassErrorType(diagnostic.reason)")
+            default("delegatedTypeRef") {
+                value = "null"
+                withGetter = true
+            }
             useTypes(coneClassErrorTypeType)
         }
 
+        impl(resolvedFunctionTypeRef) {
+            default("delegatedTypeRef") {
+                value = "null"
+                withGetter = true
+            }
+        }
+
         impl(errorFunction) {
             defaultNull("receiverTypeRef", "body", withGetter = true)
             default("returnTypeRef", "FirErrorTypeRefImpl(null, diagnostic)")

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

@@ -490,6 +490,7 @@ object NodeConfigurator : AbstractFieldConfigurator() {
 
         resolvedTypeRef.configure {
             +field("type", coneKotlinTypeType)
+            +field("delegatedTypeRef", typeRef, nullable = true)
         }
 
         delegatedTypeRef.configure {