xF2 Add-on Conversation Improvements by Xon 2.5.1 2.5.1

• Fix adding a recipient to a direct message would re-index the conversation twice with XF2.3
• Fix check with XF2.2 for starting a conversation without recipients

• For XF2.2, require re-indexing of conversations & conversation messages!
• Require StandardLib v1.21.0+
• Require Search Improvements v2.16.0+
• XF2.3 support
• php 8.4+ compatibility fixes
• Remove "Allow conversations with no one" option. XF2.3 supports this by default

• Add "silently edit" feature for editing conversation messages, requires the "edit any message" permission

• Fix edited conversation messages lacked the "Last edited:" marker after they had been edited

• Require Search Improvements v2.10.0+
• Improve how conversations are filtered out of search results when using XFES without ElasticSearch Essentials

• Fix mysql-based search support not returning conversation search results when using the conversation search tab

• When using XenForo Enhanced Search:
  • Improve reliability of indexing recipients into conversations for search
  • Improve generating constraint restricting conversations to recipients
  • If using Search Improvements v2.9.6 or earlier, ensure the option "Push "View X by others" check into XFES" is enabled.
    If it was disabled, you will need to re-index for conversation search to return results

• Require XenForo 2.2+
• Improve handling of leaving/joining conversation and the impact on search.
  This will require re-indexing conversation messages.
  • When a user joins a conversation, ensure they can search that conversation
  • If a user leaves a conversation, do not return it in search results.