Replace deprecated Azure Pipelines Node installer

[Copilot]

NodeTool@0 is deprecated and no longer maintained. This updates pipeline templates to use UseNode@1.

• Pipeline updates

  • Replaced NodeTool@0 in build, smoke-test, and regression-test templates.
  • Preserved existing Node version inputs.

• Regression tests

  • Removed the redundant second Node installer step.

- task: UseNode@1
  inputs:
    versionSpec: ${{ parameters.nodeVersion }}

[azure-pipelines]

You may test this build by running autorest --reset and then either:

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Add the following CLI flags

Pacakge	Flag	Description
@autorest/core	--version:https://tinyurl.com/2chns2k5	For changes to autorest core.
@autorest/modelerfour	--use:https://tinyurl.com/28chqrhx	For changes to modelerfour.

Or with all

autorest --version:https://tinyurl.com/2chns2k5 --use:https://tinyurl.com/28chqrhx

---

or use the following in your autorest configuration:

# For changes to autorest core
version: "https://tinyurl.com/2chns2k5"

# For changes to modelerfour
use-extension:
  "@autorest/modelerfour": "https://tinyurl.com/28chqrhx"

---

If this build is good for you, give this comment a thumbs up. (👍) And you should run `autorest --reset` again once you're finished testing to remove it.