### Check for existing issues

- [x] I have searched the existing issues and checked that my issue is not a duplicate.

### What happened?

After the monthly reset, the spend for each key is set to 0 again. And also in the last month it worked, that if a key reaches the max_budget, new requests are rejected due to the limit

But now after the reset, it seems to be ignored. We have already some key which run over the limits and can still send requests.

If a change the max_budget for a key (spend 193, old budget 200 to now 180) requests immediately fail due to budget limit.

Some logs I can found are posted below

### Steps to Reproduce

1. Define a budget 2. Monthly reset happen 3. Budget is ignored

### Relevant log output

```shell 15:21:57 - LiteLLM Proxy:ERROR: reset_budget_job.py:660 - Failed to reset budget windows for keys: Unable to match input value to any allowed input type for the field. Parse errors: [`where.budget_limits.not`: A value is required but not set, `where.budget_limits.not`: A value is required but not set, `where.budget_limits.not`: A value is required but not set] File "/app/.venv/lib/python3.13/site-packages/litellm/proxy/common_utils/reset_budget_job.…