Ensure Log API fetches for all rooms

[Fishbowler]

#222 spotted some deprecated methods after bumping the minimum Openfire version
#223 spotted that the reason getChatRooms() was deprecated was because it fetched in-memory chat rooms only (and had been replaced with an equivalent getActiveChatRooms()

Update the implementation to inspect all rooms when needed, not just the ones in memory/cache.
Beware memory utilisation - iterating over all unused MUCs in the DB could be expensive.

openfire-monitoring-plugin/src/java/org/jivesoftware/openfire/plugin/service/LogAPI.java

Line 65 in 5bab10a

.filter(s -> s.getActiveChatRooms().stream().anyMatch(r -> r.isLogEnabled() && r.isPublicRoom()))

openfire-monitoring-plugin/src/java/org/jivesoftware/openfire/plugin/service/LogAPI.java

Line 91 in 5bab10a

final List<String> roomNames = multiUserChatService.getActiveChatRooms().stream()