fix(tasks): separate Pending Share Accounts from the Pending Account screen

Removes the Pending Share Accounts section that had been bolted onto the
Pending Account screen (duplicate data/actions alongside the normal-account
table), restoring it as its own standalone queue. The standalone
pending-share-accounts route/component already existed but had no tab link
anywhere in the Approval Center nav, so it was unreachable from the UI -
added a "Pending Share Accounts" tab for it.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/tasks/tasks-routing.module.ts

@@ -108,10 +108,7 @@ const routes: Routes = [
           component: PendingAccountComponent,
           data: { title: 'Pending Account' },
           resolve: {
-            pendingAccountsData: GetPendingAccounts,
-            // Share accounts awaiting approval now render inside this same screen instead of their
-            // own tab - reuses the same resolver the standalone route below still uses.
-            pendingShareAccountsData: GetPendingShareAccounts
+            pendingAccountsData: GetPendingAccounts
           }
         },
         {