Avoid raising MemcacheServerError

[mauromsl]

As of Django 4.2, django.core.cache.backends.memcached.MemcachedCache has been deprecated and this library has become one of the two supported backends as well as their suggestion in the docs

While this library works basically as a drop-in replacement, we've identified one area where it behaves differently to python-memcached: exceptions such as MemcacheServerError('object too large for cache') are always raised.

For comparison, django-pylibmc will log an error instead

In order to align the behaviours, would you be open to a similar handling here?

pymemcache/pymemcache/client/base.py

Line 1081 in 1d565a2

raise MemcacheServerError(error)

We don't want to introduce a breaking change, so perhaps a new client option could work? e.g Client(domain, raise_server_errors=True)