Add extra context to messages that are added to channels, allowing the logging controller to take more responsibility in what messages to log (#5499)

Co-auhtored-by: James Upjohn <jupjohn@jammeh.co.nz>

src/widgets/helper/SearchPopup.cpp

@@ -55,7 +55,7 @@ ChannelPtr SearchPopup::filter(const QString &text, const QString &channelName,
             auto overrideFlags = std::optional<MessageFlags>(message->flags);
             overrideFlags->set(MessageFlag::DoNotLog);
 
-            channel->addMessage(message, overrideFlags);
+            channel->addMessage(message, MessageContext::Repost, overrideFlags);
         }
     }