Have historyWatch report errors via notifyError instead of an onError callback.

src/api/ApiClient.js

@@ -110,10 +110,9 @@ export class ApiClient {
       history: (sku) => this.#json('GET', `/api/article/${enc(sku)}/history`),
       /**
        * Load history and refetch on SSE `article-<sku>`.
-       * `onHistory(history)` / `onError(err)` — returns unwatch().
+       * `onHistory(history)` — returns unwatch(). Errors via notifyError.
        */
-      historyWatch: (sku, onHistory, onError) =>
-        this.watchArticleHistory(sku, onHistory, onError),
+      historyWatch: (sku, onHistory) => this.watchArticleHistory(sku, onHistory),
       /** PATCH /api/article/{sku} — body: at least one of { name, unitamount, unitSi } */
       update: async (sku, body) => {
         const nameChange = body != null && Object.hasOwn(body, 'name');