sdk/rust: Fix overlayfs whiteout for base files in promoted dirs #675

Job	Run time
plan	23s
build-local-artifacts (${{ join(matrix.targets, ', ') }})	0s
host	0s
build-global-artifacts	0s
publish-npm	-1s
publish-pypi	-1s
publish-cargo	-1s
announce	-1s
	19s

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