fix(): Workflow save to db + index integration instability (#13707)

**What**
- Fix index integration tests instability
- Fix workflow engine storage save to db

integration-tests/helpers/wait-for-index.ts

@@ -0,0 +1,54 @@
+/**
+ * Helper functions to wait for index synchronization in a deterministic way
+ * by directly checking the index_data table instead of using arbitrary timeouts.
+ */
+
+export interface WaitForIndexOptions {
+  timeout?: number
+  pollInterval?: number
+}
+
+/**
+ * Wait for specific entities to be indexed by checking the index_data table directly.
+ * This is more reliable than using arbitrary timeouts.
+ */
+export async function waitForIndexedEntities(
+  dbConnection: any,
+  entityName: string,
+  entityIds: string[],
+  options: WaitForIndexOptions = {}
+): Promise<void> {
+  const { timeout = 120000, pollInterval = 100 } = options
+  const startTime = Date.now()
+
+  while (Date.now() - startTime < timeout) {
+    try {
+      // Query the index_data table to check if all entities are indexed
+      const result = await dbConnection.raw(
+        `SELECT id FROM index_data WHERE name = ? AND id = ANY(?) AND staled_at IS NULL`,
+        [entityName, entityIds]
+      )
+
+      const indexedIds = result.rows
+        ? result.rows.map((row: any) => row.id)
+        : result.map((row: any) => row.id)
+
+      // Check if all expected entities are indexed
+      const allIndexed = entityIds.every((id) => indexedIds.includes(id))
+
+      if (allIndexed) {
+        return
+      }
+    } catch (error) {
+      // Continue polling on database errors
+    }
+
+    await new Promise((resolve) => setTimeout(resolve, pollInterval))
+  }
+
+  throw new Error(
+    `Entities [${entityIds.join(
+      ", "
+    )}] of type '${entityName}' were not indexed within ${timeout}ms`
+  )
+}