DAOS-16211 vos: Ensure we delete exact entry

[jolivier23]

When the change was made to allow partial overwrite for rebuild, it broke delete such that delete would remove the newest extent rather than the exact one we requested.

Also, don't ignore errors when processing removals

Required-githooks: true

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[github-actions]

Bug-tracker data:
Ticket title is 'Assertion in VOS aggregation (close_merge_window() Assertion '(mw->mw_rmv_cnt == 0)' )'
Status is 'Open'
Labels: 'daos_ecb_issue,daos_ecb_scale,soak,triaged'
https://daosio.atlassian.net/browse/DAOS-16211

[daosbuild1]

LGTM. No errors found by checkpatch.

[jolivier23]

will reopen when master fix lands.