### Check for existing issues

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

### What happened?

When an enduser exceeds his budget, it blocks not just all non-zero cost models but also **all** group model alias endpoints, including those pointing on zero-cost models. This is an unintended behavior, as free models should stay available, also behind an alias.

### Steps to Reproduce

1. create a model group alias and point it to a free model (model A) 2. exceed your budget 3. try calling model A -> success 4. try calling group model alias (of model A) -> Error 429!!! 5.

### Relevant log output

```shell

```

### What part of LiteLLM is this about?

Proxy

### What LiteLLM version are you on ?

v1.93.0

### Twitter / LinkedIn details

_No response_