Don't jump to bottom on reaction

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

src/components/structures/MessagePanel.js

@@ -229,7 +229,7 @@ export default class MessagePanel extends React.Component {
 
     onAction = (payload) => {
         switch (payload.action) {
-            case "message_sent":
+            case "scroll_to_bottom":
                 this.scrollToBottom();
                 break;
         }

src/components/views/rooms/SendMessageComposer.js

@@ -403,6 +403,7 @@ export default class SendMessageComposer extends React.Component {
         this._editorRef.clearUndoHistory();
         this._editorRef.focus();
         this._clearStoredEditorState();
+        dis.dispatch({action: "scroll_to_bottom"});
     }
 
     componentWillUnmount() {