fix(server): image action behavior in ci (#9077)

packages/backend/server/src/plugins/copilot/storage.ts

@@ -38,7 +38,7 @@ export class CopilotStorage {
   ) {
     const name = `${userId}/${workspaceId}/${key}`;
     await this.provider.put(name, blob);
-    if (this.config.node.dev) {
+    if (this.config.node.dev || this.config.node.test) {
       // return image base64url for dev environment
       return `data:image/png;base64,${blob.toString('base64')}`;
     }