Cannot import name '_selector_policy' from 'fsspec.asyn'

[AlexandrePradeilles]

Recently, fsspec removed _selector_policy here: fsspec/filesystem_spec@01ecda4
This causes an import error in my case when running a dvc exp push
Packages versions (simple uv lock and sync to install them with no special constraints on versions):
dvc 3.61.0
scmrepo 3.3.11
fsspec 2025.7.0

It seems that just like in their PR, it's possible to not use _selector_policy anymore in the get_loop function in async.py.
At least in my case simply removing it did the trick.

[skshetry]

Closed by #423.