refactor: Clean few source control cases

[tomi]

Summary

• Remove unused parameter
• Make parameter required: Backend requires it, and it's always passed.

Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)

[netroy]

looking at the frontend call, SourceControlPullWorkFolder should only have a force: boolean. No other field seem used.

while we are at it, we should also trim down SourceControlPushWorkFolder.

[netroy]

cherry-picked these commits, and removed more unused properties in #12470