Fix: panel axis upgraded when sharing axes. #3197

Job	Run time
run-if-changes	6s
Coverage	6m 45s
get-versions	15s
select-tests	12s
build (3.10, 3.9) / Test Python 3.10 with MPL 3.9	21s
build (3.10, 3.9) / Compare baseline Python 3.10 with MPL 3.9	6m 55s
build (3.12, 3.10) / Test Python 3.12 with MPL 3.10	25s
build (3.12, 3.10) / Compare baseline Python 3.12 with MPL 3.10	6m 17s
build (3.14, 3.10) / Compare baseline Python 3.14 with MPL 3.10	7m 27s
build (3.14, 3.10) / Test Python 3.14 with MPL 3.10	28s
build-success	3s
	29m 14s

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