fix(release): Update backport action to override team_reviews

[Chickensoupwithrice]

@kalan was debugging the Backport action here, and found a bug.

We previously always attached the review to the release team, but that team is not a collaborator here in the Cody repo.
We could add them as collaborators, but that doesn't give us any benefit.

So instead I've changed the way the backport GHA works, and made the team_reviews a parameter. Here we override it to set no team. This means that only the original author and / or merger of the PR will be tagged in the new backport PR.

Test plan

Add the label to this PR, and it should create a new PR that backports this one, without errors

Changelog

N/A

[kalanchan]

thank you!

[sourcegraph-release-bot]

The backport to vscode-v1.44.x failed at https://github.com/sourcegraph/cody/actions/runs/11865173309:

Reviews may only be requested from collaborators. One or more of the teams you specified is not a collaborator of the sourcegraph/cody 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 vscode-v1.44.x -p 6136

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-vscode-v1.44.x vscode-v1.44.x
# Navigate to the new working tree
cd .worktrees/backport-vscode-v1.44.x
# Create a new branch
git switch --create backport-6136-to-vscode-v1.44.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 3978bdd9c78b558611efd91bfcc5abe94e31cb73
# Push it to GitHub
git push --set-upstream origin backport-6136-to-vscode-v1.44.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-vscode-v1.44.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-6136-to-vscode-v1.44.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-vscode-v1.44.x

• Follow above instructions to backport the commit.
• Create a pull request where the base branch is vscode-v1.44.x and the compare/head branch is backport-6136-to-vscode-v1.44.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.