refactor(cursor): simplify list_repositories v2 array normalization

Collapse the redundant `?? []` + `Array.isArray` double-guard into a
single Array.isArray check, per PR review feedback.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: waleedlatif1

apps/sim/tools/cursor/list_repositories.ts

@@ -84,12 +84,11 @@ export const listRepositoriesV2Tool: ToolConfig<
   version: '2.0.0',
   transformResponse: async (response) => {
     const data = await response.json()
-    const repositories = data.repositories ?? []
 
     return {
       success: true,
       output: {
-        repositories: Array.isArray(repositories) ? repositories : [],
+        repositories: Array.isArray(data.repositories) ? data.repositories : [],
       },
     }
   },