* Revert "feat(backend): use flow nodes opti for ai agent steps (#6808)"
This reverts commit 8d5acda340.
* fix(backend): revert flow node opti for ai agents
* keep standard base64
* Revert "feat(backend): use flow nodes opti for ai agent steps (#6808)"
This reverts commit 8d5acda340.
* fix(backend): revert flow node opti for ai agents
* keep standard base64