Remove to_write="once" option #2553

Job	Run time
should run ci	8s
GHA Security Analysis using Zizmor	18s
cache-pixi-lock	7s
build-and-upload-nightly-parcels	2m 21s
TypeChecking: pixi run typing	1m 54s
Unit tests: ubuntu \| pixi run -e test-py311 tests	3m 55s
Unit tests: windows \| pixi run -e test tests	6m 19s
Unit tests: ubuntu \| pixi run -e test-py313 tests	3m 50s
Unit tests: ubuntu \| pixi run -e test-minimum tests	3m 58s
Unit tests: ubuntu \| pixi run -e test tests	4m 30s
Integration: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests-notebooks	-1s
merge-test-artifacts	1s
	27m 20s

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