Add support for configuring npm version in Node devcontainers #2942

Job	Run time
detect-changes	5s
test-scenarios (node)	20m 55s
test (node, ubuntu:focal)	41s
test (node, debian:12)	48s
test (node, debian:11)	43s
test (node, mcr.microsoft.com/devcontainers/base:ubuntu)	49s
test (node, ubuntu:jammy)	54s
test (node, mcr.microsoft.com/devcontainers/base:noble)	44s
test (node, mcr.microsoft.com/devcontainers/base:debian)	45s
	26m 24s

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