Move fetching detailed accounts from firstUpdated to updated

It's unclear why but upon closing and reopening the reply dialog
the render() method is called twice which means the update caused
by firstUpdated to account is lost.
The fetching of the account is cached in the accounts model hence
we are not making unnecessary requests.

Release-Notes: skip
Google-bug-id: b/236921879
Change-Id: I9ba675f7ae5fe279aa92a4b4ec4ccfcf2ef1d47a
diff --git a/polygerrit-ui/app/elements/shared/gr-account-label/gr-account-label.ts b/polygerrit-ui/app/elements/shared/gr-account-label/gr-account-label.ts
index 3958c67..2985e62 100644
--- a/polygerrit-ui/app/elements/shared/gr-account-label/gr-account-label.ts
+++ b/polygerrit-ui/app/elements/shared/gr-account-label/gr-account-label.ts
@@ -188,7 +188,7 @@
     ];
   }
 
-  override async firstUpdated() {
+  override async updated() {
     assertIsDefined(this.account, 'account');
     const account = await this.accountsModel.fillDetails(this.account);
     if (account) this.account = account;