Enable stylelint rule no-unknown-custom-properties (#28473) #4761

	name: Build
	on:
	pull_request: {}
	push:
	branches: [develop, master]
	merge_group:
	types: [checks_requested]
	# develop pushes and repository_dispatch handled in build_develop.yaml
	env:
	# These must be set for fetchdep.sh to get the right branch
	REPOSITORY: ${{ github.repository }}
	PR_NUMBER: ${{ github.event.pull_request.number }}
	jobs:
	build:
	name: "Build on ${{ matrix.image }}"
	# We build on all 3 platforms to ensure we don't have any OS-specific build incompatibilities
	strategy:
	fail-fast: false
	matrix:
	image:
	- ubuntu-24.04
	- windows-2022
	- macos-14
	isDevelop:
	- ${{ github.event_name == 'push' && github.ref_name == 'develop' }}
	# Skip the ubuntu-24.04 build for the develop branch as the dedicated CD build_develop workflow handles that
	exclude:
	- isDevelop: true
	image: ubuntu-24.04
	runs-on: ${{ matrix.image }}
	defaults:
	run:
	shell: bash
	steps:
	- uses: actions/checkout@v4

	- uses: actions/setup-node@v4
	with:
	cache: "yarn"
	node-version: "lts/*"

	# Workaround for yarn install timeouts, especially on Windows
	- run: yarn config set network-timeout 300000

	- name: Install Dependencies
	run: "./scripts/layered.sh"

	- name: Build
	run: "yarn build"

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