Fix inifinite loop

[andrii-uniq]

In case of absent mode paramater in the custom fsspec file system implementation removed rows caused infinite loop, as mentioned in comments several rows above

[phofl]

Please open an issue clearly describing the problem and then add a test for your changes here. The current change is definitely incorrect since it will break existing stuff

[andrii-uniq]

    def __getattr__(self, key):
        try:
            return object.__getattribute__(self, key)
        except AttributeError as err:
            if key.startswith("_meta"):
                # Avoid a recursive loop if/when `self._meta*`
                # produces an `AttributeError`
                raise RuntimeError(
                    f"Failed to generate metadata for {self}. "
                    "This operation may not be supported by the current backend."
                )
           ....
            if is_dataframe_like(self._meta) and key in self._meta.columns:
                return self[key]

I removed the last two rows. I don't know full library guts, so I can not correctly understand the logic behind the intended behavior. But the code clearly shows contradiction. Also, I have a specific example where these rows caused an infinite loop, but this is a rather specific case. If it is suitable, I can add a test for this case.

[phofl]

the current logic definitely behaves as intended for what it was added for, there is no contradiction.

Yes, please add an example that is failing / causing an infinite loop

[andrii-uniq]

I see:
# Avoid a recursive loop if/when self._meta*
if is_dataframe_like(self._meta)
Okay, I'll prepare a minimal example and will add it.