🐛 fix(query-export): 修复查询结果导出卡住并统一按数据源能力控制导出路径

- 查询结果页导出增加稳定兜底，异常时确保 loading 关闭避免持续转圈
- DataGrid 导出逻辑按数据源能力分流，优先走后端 ExportQuery 并保留结果集导出降级
- QueryEditor 传递结果导出 SQL，保证查询结果导出范围与当前结果一致
- 后端补充 ExportData/ExportQuery 关键日志，提升导出链路可观测性

docs/driver-manifest.json

@@ -75,7 +75,7 @@
     },
     "clickhouse": {
       "engine": "go",
-      "version": "2.43.0",
+      "version": "2.43.1",
       "checksumPolicy": "off",
       "downloadUrl": "builtin://activate/clickhouse"
     },