* Clear usernamekey * Odd explaining comment * Update src/Umbraco.Core/Cache/Refreshers/Implement/MemberCacheRefresher.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Make UserNameCachePrefix readonly for better immutabilityly * Move prefix to CacheKeys constants --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> # Conflicts: # src/Umbraco.Core/Cache/CacheKeys.cs