fix(gitlab): paginate TaskPage issues beyond 50 (#13538)

Co-authored-by: Neil <neil@stably.ai>

src/preload/api/gitlab-api.ts

@@ -67,8 +67,14 @@ export type GitLabApi = {
       state?: 'opened' | 'closed' | 'all'
       assignee?: string
       limit?: number
+      page?: number
     }
-  ) => Promise<{ items: GitLabWorkItem[]; error?: ClassifiedError }>
+  ) => Promise<{
+    items: GitLabWorkItem[]
+    /** Optional while paired with a host older than issue pagination. */
+    totalPages?: number
+    error?: ClassifiedError
+  }>
   createIssue: (
     args: GitLabRepoSelectorArgs & {
       title: string