ZoneInfo object raises OSError instead of ZoneInfoNotFoundError for timezone input larger than 255 characters

Bug report

According to documentation all calls to ZoneInfo should raise ValueError or ZoneInfoNotFoundError.
Creating a ZoneInfo object with an invalid very long timezone (length > 255) an OSError is raised instead (OSError: [Errno 36] File name too long).

I believe that https://github.com/python/cpython/blob/29f1b0bb1ff73dcc28f0ca7e11794141b6de58c9/Lib/zoneinfo/_common.py#L11-L24 should also handle the OSError exception raised by open and reraise it to ZoneInfoNotFoundError.

Sample code for reproduction:

from zoneinfo import ZoneInfo
ZoneInfo("a"*256)

Your environment

• CPython versions tested on: Python 3.10.4
• Operating system and architecture: Debian GNU/Linux 11 (bullseye)

Linked PRs

• gh-99602

Inizia in Lib/zoneinfo/_common.py, nella chiamata a open indicata, e riproduci il problema con ZoneInfo("a"*256). Controlla il comportamento esistente delle eccezioni per gli input di fuso orario non validi, quindi verifica che l’input lungo produca l’eccezione documentata invece di OSError. Il PR collegato gh-99602 indica che il lavoro è già in corso.