[Bug]: Loading task classifier from Classifier class not working

[HallerPatrick]

Describe the bug

Loading e.g the "sentiment" classifier with the Classifier class throws an error, that the folder or file cannot be found. Expected behavior should be, that the sentiment model from the HU model repo should be fetched. This seems to be a regression bug, as with flair==0.12.x it works

To Reproduce

from flair.nn import Classifier

classifier = Classifier.load("sentiment")

Expected behavior

The code should download the text classifiert model and the respective model object should be returns

Logs and Stack traces

Traceback (most recent call last):
  File "/home/folder/test.py", line 4, in <module>
    classifier = Classifier.load('sentiment')
  File "/home/folder/venv/lib/python3.9/site-packages/flair/nn/model.py", line 557, in load
    return cast("Classifier", super().load(model_path=model_path))
  File "/home/folder/venv/lib/python3.9/site-packages/flair/nn/model.py", line 149, in load
    return model_cls.load(new_model_path)
  File "/home/folder/venv/lib/python3.9/site-packages/flair/file_utils.py", line 351, in load_torch_state
    f = load_big_file(model_file)
  File "/home/folder/venv/lib/python3.9/site-packages/flair/file_utils.py", line 49, in load_big_file
    with open(f, "rb") as f_in:
FileNotFoundError: [Errno 2] No such file or directory: 'sentiment'

Screenshots

No response

Additional Context

No response

Environment

Versions:

Flair

0.13.1

Pytorch

2.2.2+cu121

Transformers

4.40.0

GPU

True