bug/release: fix test to work during internal release build

[DaedalusG]

Fix tests introduced in #885 to work during the release flow.

This test broke the release for the internal build #888

Checklist

• Follow the manual testing process
• Update changelog
• Update Kubernetes update doc

Test plan

[sourcegraph-release-bot]

The backport to 7.4.x failed at https://github.com/sourcegraph/deploy-sourcegraph-helm/actions/runs/27315964453:

Reviews may only be requested from collaborators. One or more of the teams you specified is not a collaborator of the sourcegraph/deploy-sourcegraph-helm repository.

To backport this PR manually, you can either:

Via the sg tool

Use the sg backport command to backport your commit to the release branch.

sg backport -r 7.4.x -p 889

Via your terminal

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-7.4.x 7.4.x
# Navigate to the new working tree
cd .worktrees/backport-7.4.x
# Create a new branch
git switch --create backport-889-to-7.4.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 8db7e22913bbbd0dbde298b8f6c0818a82d8f7b3
# Push it to GitHub
git push --set-upstream origin backport-889-to-7.4.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-7.4.x

If you encouter conflict, first resolve the conflict and stage all files, then run the commands below:

git cherry-pick --continue
# Push it to GitHub
git push --set-upstream origin backport-889-to-7.4.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-7.4.x

• Follow above instructions to backport the commit.
• Create a pull request where the base branch is 7.4.x and the compare/head branch is backport-889-to-7.4.x., click here to create the pull request.

Once the pull request has been created, please ensure the following:

• Make sure to tag @sourcegraph/release in the pull request description.

• kindly remove the release-blocker from this pull request.