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Allow reupload of deleted files ('duplicate-archive' warning)

Authored by matmarex.

Description

Allow reupload of deleted files ('duplicate-archive' warning)

Previously implemented and reverted because of T41852, the code bitrotted
and was deleted. This patch restores it and makes it work again.

Bug: T42921
Change-Id: Iefe89491f5fa762c1ba09bd1e2aa5b8265e5359c