Fix main build golden tests (#19815)

* Fix main build golden tests

* fixup

Author: mustard-mh

components/public-api/typescript-common/fixtures/toPrebuild_1.golden

@@ -21,7 +21,8 @@
             },
             "startTime": "2023-11-17T10:42:00Z",
             "message": "",
-            "logUrl": "https://gitpod-test.preview.gitpod-dev.com/prebuild-logs/5fba7d7c-e740-4339-b928-0e3c5975eb37"
+            "logUrl": "https://gitpod-test.preview.gitpod-dev.com/prebuild-logs/5fba7d7c-e740-4339-b928-0e3c5975eb37",
+            "taskLogs": []
         },
         "configurationName": "parcel-demo"
     },

components/public-api/typescript-common/src/public-api-converter.ts

@@ -1196,7 +1196,7 @@ export class PublicAPIConverter {
 
     toPrebuildStatus(gitpodHost: string, prebuild: PrebuildWithStatus): PrebuildStatus {
         const tasks: TaskLog[] = [];
-        if (prebuild.workspace.config.tasks) {
+        if (prebuild.workspace?.config?.tasks) {
             for (let i = 0; i < prebuild.workspace.config.tasks.length; i++) {
                 const task = prebuild.workspace.config.tasks[i];
                 tasks.push(