Fix data flow between publication tree and ToC

src/lib/components/publications/TableOfContents.svelte

@@ -40,14 +40,8 @@
     }
 
     entry.expanded = expanded;
-    if (entry.childrenResolved) {
-      return;
-    }
-
-    if (expanded) {
     entry.resolveChildren();
   }
-  }
 
   function handleEntryClick(address: string, expanded: boolean = false) {
     setEntryExpanded(address, expanded);

src/lib/components/publications/table_of_contents.svelte.ts

@@ -148,8 +148,8 @@ export class TableOfContents {
     });
 
     // Set up an observer to handle progressive resolution of the publication tree.
-    this.#publicationTree.onNodeResolved(async (address: string) => {
-      await this.#buildTocEntryFromResolvedNode(address);
+    this.#publicationTree.onNodeResolved((address: string) => {
+      this.#buildTocEntryFromResolvedNode(address);
     });
   }
 

src/lib/data_structures/publication_tree.ts

@@ -623,7 +623,6 @@ export class PublicationTree implements AsyncIterable<NDKEvent | null> {
       this.addEventByAddress(address, event);
     }
 
-    // TODO: We may need to move this to `#addNode`, so the observer is notified more eagerly.
     this.#nodeResolvedObservers.forEach(observer => observer(address));
 
     return node;