store [nfc]: Take account ID for _reloadPerAccount

Now that the caller is getting the Account object by looking
it up on the GlobalStore anyway, there's no checking to be gained
from passing the whole Account here.

Author: gnprice

lib/model/store.dart

@@ -119,12 +119,11 @@ abstract class GlobalStore extends ChangeNotifier {
     return store;
   }
 
-  Future<void> _reloadPerAccount(Account account) async {
-    assert(identical(_accounts[account.id], account));
-    assert(_perAccountStores.containsKey(account.id));
-    assert(!_perAccountStoresLoading.containsKey(account.id));
-    final store = await loadPerAccount(account.id);
-    _setPerAccount(account.id, store);
+  Future<void> _reloadPerAccount(int accountId) async {
+    assert(_perAccountStores.containsKey(accountId));
+    assert(!_perAccountStoresLoading.containsKey(accountId));
+    final store = await loadPerAccount(accountId);
+    _setPerAccount(accountId, store);
   }
 
   void _setPerAccount(int accountId, PerAccountStore store) {
@@ -672,7 +671,7 @@ class UpdateMachine {
         switch (e) {
           case ZulipApiException(code: 'BAD_EVENT_QUEUE_ID'):
             assert(debugLog('Lost event queue for $store.  Replacing…'));
-            await store._globalStore._reloadPerAccount(store.account);
+            await store._globalStore._reloadPerAccount(store.accountId);
             dispose();
             debugLog('… Event queue replaced.');
             return;