fix: add groupName to ExecutionSummary in schema.d.ts

The Java record was updated but the OpenAPI schema was not regenerated,
causing a TypeScript build error in CI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/api/schema.d.ts

@@ -1092,6 +1092,7 @@ export interface components {
             executionId: string;
             routeId: string;
             agentId: string;
+            groupName: string;
             status: string;
             /** Format: date-time */
             startTime: string;