more sandbox fixes

We add "executor": "nx:noop" to the test:e2e entry in the package's nx.targets to fix the failing task. Without this, Nx's project-level configuration (which takes precedence over plugin-inferred targets) fell back to the npm script executor, causing Playwright to start a webServer via pnpm start without a pre-built dist/ directory. This change makes the base test:e2e task behave as the playwright plugin intends — a noop aggregation over the mode-specific targets that each handle their own build and test steps.