fix: Cleanup totally empty drafts on leave (#3310)

* fix: Cleanup totally empty drafts on leave

* cleanup

* fix: Add check the doc has never been saved after creation when auto-deleting

app/models/Document.ts

@@ -172,6 +172,11 @@ export default class Document extends BaseModel {
     return !this.publishedAt;
   }
 
+  @computed
+  get hasEmptyTitle(): boolean {
+    return this.title === "";
+  }
+
   @computed
   get titleWithDefault(): string {
     return this.title || "Untitled";