fix: get_widget did not always work for function components #307

	name: Test installation

	on:
	- push
	- pull_request
	- workflow_dispatch

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.7
	uses: actions/setup-python@v2
	with:
	python-version: 3.7
	- name: Install hatch
	run: pip install hatch "pip<22"
	- name: Build
	run: hatch build
	- name: Install
	run: pip install dist/*.whl
	- name: Test import
	run: python -c "import react_ipywidgets; import reacton"

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