fix(bundler): allow CSS nesting by default, restore postcss-preset-env #9336

	name: Lint

	on:
	pull_request:
	branches:
	- main
	- docusaurus-v**

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	permissions:
	contents: read

	jobs:
	lint:
	name: Lint
	timeout-minutes: 30
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
	- name: Set up Node
	uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.1.0
	with:
	node-version: lts/*
	cache: yarn
	- name: Installation
	run: yarn
	# run: yarn install --immutable # Fails if yarn.lock is modified (unfortunately only works for Yarn 2, and --frozen-lockfile is not the same!)
	- name: Check immutable yarn.lock
	run: git diff --exit-code

	- name: Check for suspicious yarn.lock
	# for allowed aliases, see https://github.com/yargs/cliui/pull/139/files#r1670711112
	run: yarn lockfile-lint --path yarn.lock --type yarn --allowed-hosts yarn --validate-https --validate-package-names --validate-integrity --empty-hostname=false --allowed-package-name-aliases react-loadable string-width-cjs strip-ansi-cjs wrap-ansi-cjs

	- name: Lint
	run: \|
	echo "::add-matcher::.github/workflows/cspell-problem-matcher.json"
	yarn lint:ci

	- name: Prettier Code
	run: yarn format:diff

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