Replace instances of `@submodel` with `to_submodel()` #3130

	name: Format

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	merge_group:
	types: [checks_requested]

	concurrency:
	# Skip intermediate builds: always.
	# Cancel intermediate builds: only if it is a pull request build.
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}

	jobs:
	format:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: julia-actions/setup-julia@v2
	with:
	version: 1
	- name: Format code
	run: \|
	using Pkg
	Pkg.add(; name="JuliaFormatter", uuid="98e50ef6-434e-11e9-1051-2b60c6c9e899")
	using JuliaFormatter
	format("."; verbose=true)
	shell: julia --color=yes {0}
	- uses: reviewdog/action-suggester@v1
	if: github.event_name == 'pull_request'
	with:
	tool_name: JuliaFormatter
	fail_on_error: true

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