feat(APT-1610): add portalEl prop to Combobox #580

	on:
	pull_request:
	branches: [master]
	name: prerelease
	jobs:
	prerelease:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Use Node.js 16
	uses: actions/setup-node@v2
	with:
	node-version: 16
	- run: yarn install --immutable
	- run: yarn dist
	- run: npm version prerelease --preid=$GITHUB_HEAD_REF-`git rev-parse --short HEAD` --git-tag-version=false --commit-hooks=false
	- run: \|
	npm config set registry https://npm.pkg.github.com
	npm config set //npm.pkg.github.com/:_authToken=${{ secrets.GITHUB_TOKEN }}
	npm publish --tag $GITHUB_HEAD_REF
	- name: Extract NPM package name
	run: echo "::set-output name=npm-name::`node -p -e "require('./package.json').name"`"
	id: npm-name
	- name: Extract npm package version
	run: echo "::set-output name=npm-version::`node -p -e "require('./package.json').version"`"
	id: npm-version
	- name: Comment PR
	uses: marocchino/sticky-pull-request-comment@v2
	with:
	recreate: true
	message: \|
	Released prerelease version `${{ steps.npm-version.outputs.npm-version }}`.
	You may now run `npm install ${{ steps.npm-name.outputs.npm-name }}@${{ github.head_ref }}`

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