Merge pull request #4628 from matrix-org/t3chguy/message_sent

Fix sentMessageAndIsAlone by dispatching `message_sent` more consistently

src/components/views/rooms/EditMessageComposer.js

@@ -190,6 +190,7 @@ export default class EditMessageComposer extends React.Component {
             const roomId = editedEvent.getRoomId();
             this._cancelPreviousPendingEdit();
             this.context.sendMessage(roomId, editContent);
+            dis.dispatch({action: "message_sent"});
         }
 
         // close the event editing and focus composer

src/components/views/rooms/SendMessageComposer.js

@@ -312,6 +312,7 @@ export default class SendMessageComposer extends React.Component {
                     event: null,
                 });
             }
+            dis.dispatch({action: "message_sent"});
         }
 
         this.sendHistoryManager.save(this.model);