fix: don't invalidate cache for `CloudflareCrawler` based on a changed `account_id` value

[rich-iannone]

Currently we have cache invalidation for CloudflareCrawler based on entries in

raghilda/src/raghilda/crawl.py

Line 1689 in 3b576ca

def _record_cache_signature(self) -> dict[str, Any]:

However, we shouldn't include "account_id" in that signature since it shouldn't be involved in cache invalidation.