Enable auto task for timm models in pipeline
Author: qubvel
Pull request: yes

# What does this PR do?

The code is failing in case `task` is not specified in the pipeline for timm model

```python
from transformers import pipeline

# expilict task specification works
classifier = pipeline("image-classification", model="timm/resnet50.a1_in1k")

# auto task is not working at the moment for timm
classifier = pipeline(model="timm/resnet50.a1_in1k")   # <----- lead to error

result = classifier("https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/timm/cat.jpg")
print(result)
```

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Fixes # (issue)


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Comments:
The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_35531). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

@Rocketknight1 did you approve the changes? 😄 

@qubvel let's pretend that didn't happen. Approved!

and maybe let's add a test!