Add a warning whenever a _mesh is different for a field when added to… #2998

Job	Run time
GHA Security Analysis using Zizmor	20s
should run ci	5s
cache-pixi-lock	7s
Validation tests \| pixi run tests-validation	2m 11s
build-and-upload-nightly-parcels	1m 58s
Flaky unit tests: ubuntu \| pixi run -e test tests-flaky	2m 23s
TypeChecking: pixi run typing	1m 46s
Unit tests: ubuntu \| pixi run -e test-py311 tests	5m 51s
Unit tests: ubuntu \| pixi run -e test-minimum tests	4m 51s
Unit tests: windows \| pixi run -e test tests	13m 19s
Unit tests: ubuntu \| pixi run -e test-py313 tests	6m 6s
Unit tests: ubuntu \| pixi run -e test tests	4m 0s
Integration: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests-notebooks	-1s
merge-test-artifacts	0s
	42m 56s

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