Setting `flickr8k` from `illinois.edu` to `root` argument of `Flickr8k()` doesn't load any images, returning the length `0`

🐛 Describe the bug

Setting flickr8k from illinois.edu to root argument of Flickr8k() doesn't load any images, returning the length 0 as shown below. *I used the absolute paths on Windows 11:

flickr8k
  |- Images
  |    |- *.jpg
  |   ...
  |- CrowdFlowerAnnotations.txt
  |- ExpertAnnotations.txt
  |- Flickr_8k.devImages.txt
  |- Flickr_8k.testImages.txt
  |- Flickr_8k.trainImages.txt
  |- Flickr8k.lemma.token.txt
  |- Flickr8k.token.txt
  └ readme.txt

from torchvision import datasets

train_data = datasets.Flickr8k(
    root="C:/Users/<user>/dl-models/data/flickr8k/images", # Here
    ann_file="C:/Users/<user>/dl-models/data/flickr8k/CrowdFlowerAnnotations.txt"
)

print(len(train_data)) # 0

from torchvision import datasets

train_data = datasets.Flickr8k(
    root="C:/Users/<user>/dl-models/data/flickr8k", # Here
    ann_file="C:/Users/<user>/dl-models/data/flickr8k/CrowdFlowerAnnotations.txt"
)

print(len(train_data)) # 0

Versions

import torchvision

torchvision.__version__ # '0.20.1'

Start at the torchvision.datasets.Flickr8k() entry point and compare how root, ann_file, and the listed Images directory are interpreted. Reproduce the Windows layout with CrowdFlowerAnnotations.txt and check why len(train_data) is 0. Done means the documented layout and both shown root choices either load the expected images or produce a clear path-related error.