emit_chatlist_item_changed event on reaction update

needed for #5387

Author: Simon-Laux

src/reaction.rs

@@ -25,6 +25,7 @@ use crate::contact::ContactId;
 use crate::context::Context;
 use crate::events::EventType;
 use crate::message::{rfc724_mid_exists, Message, MsgId, Viewtype};
+use crate::ui_events;
 
 /// A single reaction consisting of multiple emoji sequences.
 ///
@@ -201,6 +202,7 @@ async fn set_msg_id_reaction(
         msg_id,
         contact_id,
     });
+    ui_events::emit_chatlist_item_changed(context, chat_id);
     Ok(())
 }