fix(@angular/build): disable dev-server websocket when live reload is disabled

[clydin]

When live reload is disabled ("liveReload": false/no-live-reload) within the development server, the Vite websocket server will no longer be initialized. Additionally, the client code will not be loaded by the browser. This allows the development server to be used in test scenarios that would prefer to more fully represent the production fielded configuration such as E2E testing or other forms of browser-based testing.