fix: make ExperienceSys.componentType optional for template-backed experiences [DX-980] (#3003)

* fix: field made optional

* fix: guard optional componentType access in experience update endpoint [DX-980]

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: tylerpina

lib/adapters/REST/endpoints/experience.ts

@@ -58,7 +58,9 @@ export const update: RestEndpoint<'Experience', 'update'> = (
   headers?: RawAxiosRequestHeaders,
 ) => {
   const data: SetOptional<typeof rawData, 'sys'> & { componentTypeId?: string } = copy(rawData)
-  data.componentTypeId = rawData.sys.componentType.sys.id
+  if (rawData.sys.componentType) {
+    data.componentTypeId = rawData.sys.componentType.sys.id
+  }
   delete data.sys
   return raw.put<ExperienceProps>(http, getBaseUrl(params) + `/${params.experienceId}`, data, {
     headers: {

lib/entities/experience.ts

@@ -29,7 +29,7 @@ export type ExperienceSys = {
   version: number
   space: Link<'Space'>
   environment: Link<'Environment'>
-  componentType: Link<'ComponentType'>
+  componentType?: Link<'ComponentType'>
   template?: Link<'Template'>
   createdAt: string
   updatedAt: string