compute: fix merge issue passing flags
Created by: rvantonder
A change in https://github.com/sourcegraph/sourcegraph/pull/32370 effectively reverted https://github.com/sourcegraph/sourcegraph/pull/32471 on accident, in this commit: https://github.com/sourcegraph/sourcegraph/pull/32370/commits/24cf6ac76dc6be638bf09f04192f931fea26ddbc#diff-a36ff3a63dd65597105dbc4f0f71fee3d05ef8b3669ef04a9e8c1725d5395437R109
This restores the behavior in https://github.com/sourcegraph/sourcegraph/pull/32471
Test plan
Same as previous PR.