fix: update E2E test API paths and payloads to match backend

- user-apikey-lifecycle: /api/v1/keys -> /api/v1/api-keys (24 occurrences)
- admin-users: balance payload uses balance+operation+notes
- admin-groups: rate-multiplier already uses correct format

tests/node_modules/playwright-core/lib/inprocess.js

@@ -0,0 +1,3 @@
+"use strict";
+var import_inProcessFactory = require("./inProcessFactory");
+module.exports = (0, import_inProcessFactory.createInProcessPlaywright)();