fix: Emoji in title positioning (#2927)

* wip

* fix measure on first render

* wip

* refactor

* tsc

* remove fragment

* refactor (again)

* cleanup

app/models/Document.ts

@@ -96,6 +96,7 @@ export default class Document extends BaseModel {
     }
   }
 
+  @computed
   get emoji() {
     const { emoji } = parseTitle(this.title);
     return emoji;