Show quoted post when editing a quote

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

app/soapbox/reducers/compose.ts

@@ -460,6 +460,7 @@ export default function compose(state = ReducerRecord({ idempotencyKey: uuid(),
         map.set('caretPosition', null);
         map.set('idempotencyKey', uuid());
         map.set('content_type', action.contentType || 'text/plain');
+        map.set('quote', action.status.get('quote'));
 
         if (action.v?.software === PLEROMA && hasIntegerMediaIds(action.status)) {
           map.set('media_attachments', ImmutableList());