[web] Add admin permission `view-audit-log` (#27402)

* Add capability `view-audit-log`

* Fix: Don't fetch `user.auditLog` twice

* Check `view-audit-log` (frontend)

* Check `view-audit-log` (backend)

* Update tests

GitOrigin-RevId: 7e20f2bdc6387144503490f6aba234d967f84913

services/web/types/admin-capabilities.ts

@@ -7,6 +7,7 @@ export type AdminCapability =
   | 'modify-login-status'
   | 'modify-user-email'
   | 'modify-user-name'
+  | 'view-audit-log'
   | 'view-project'
   | 'view-session'
   | 'view-user-additional-info'