You can no longer configure `xpack.searchable.snapshot.shared_cache.size` as a user setting in ESS on 7.13+ deployments. This PR removes the ESS icon from the related 8.0 breaking change for the setting.
It also clarifies the breaking change text to indicate that configuring the setting on non-frozen nodes will result in an error on startup.
Relates to https://github.com/elastic/elasticsearch/pull/80795
58f32b361f