[JS release tool] Sync the necessary generation steps between JS SDK validation in spec PR and JS SDK release

This ask is coming from the recent release, in spec PR, SDK validation does not report any issue
https://github.com/Azure/azure-rest-api-specs/pull/40886

However, service team is still unable to release the SDK due to the JS pipeline error:
https://dev.azure.com/azure-sdk/internal/_build/results?buildId=6004235&view=logs&j=83516c17-6666-5250-abde-63983ce72a49&t=00be4b52-4a63-5865-8e02-c61723ad0692

We need to make the necessary generation steps between JS SDK validation in spec PR and JS SDK release to be consistent, so that we could detect problems at the early stage.
As the first step, we shall treat sample generation failure as error because samples are needed for mgmt. SDK>