### What needs to get done `fuse-overlayfs` creates a `.wh..opq` file in the part layer directory, which (at some point) raised an error when cleaning whiteouts. Investigate if this is still the case, and clean up the relevant code based on the outcome. ### Why it needs to get done Spawned by this `XXX` comment: https://github.com/canonical/craft-parts/blob/70fc3bac64c17457fd90817fde749cfa8057cd78/craft_parts/executor/part_handler.py#L1029