Don't send typing notification when restoring composer draft

src/components/views/rooms/BasicMessageComposer.tsx

@@ -234,7 +234,8 @@ export default class BasicMessageEditor extends React.Component<IProps, IState>
         });
         this.historyManager.tryPush(this.props.model, selection, inputType, diff);
 
-        let isTyping = !this.props.model.isEmpty;
+        // inputType is falsy during initial mount, don't consider re-loading the draft as typing
+        let isTyping = !this.props.model.isEmpty && !!inputType;
         // If the user is entering a command, only consider them typing if it is one which sends a message into the room
         if (isTyping && this.props.model.parts[0].type === "command") {
             const { cmd } = parseCommandString(this.props.model.parts[0].text);