ipaddress: IPv6Address.reverse_pointer produces an invalid name for an address with a scope id

Bug report

Since gh-88178 (a2104b7ce), :attr:~ipaddress.IPv6Address.exploded includes
the %scope_id suffix. IPv6Address._reverse_pointer derives the pointer
from self.exploded and only strips :, so the scope id is reversed into
the name:

>>> import ipaddress
>>> ipaddress.IPv6Address('fe80::1%eth0').reverse_pointer
'0.h.t.e.%.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa'

A scope id is link-local and is not part of the address, so it must not appear
in the reverse DNS name. The correct value is the one for fe80::1:

>>> ipaddress.IPv6Address('fe80::1').reverse_pointer
'1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa'

Before a2104b7ce this raised :exc:~ipaddress.AddressValueError; it now returns
a malformed name silently.

Linked PRs

• gh-155837

Inizia da ipaddress.IPv6Address._reverse_pointer e dagli esempi di reverse_pointer in questo report. Verifica come il suffisso scope_id entra in IPv6Address.exploded e verifica che il nome DNS inverso per fe80::1%eth0 corrisponda all’indirizzo senza suffisso. Il lavoro è completato quando l’identificatore dell’ambito è assente dal puntatore generato e l’output malformato precedente è coperto da un test di regressione.