Docs updates for E/A#98161 document Download workflows option on Workflows page

[MelvinBot]

Docs update for #98161

#98161 adds a Download workflows option to the More dropdown on Workspace > Workflows, letting admins export their workflow configuration as a CSV. The Workspace Workflows help article didn't document this (or the More menu) at all, so this PR adds a short task-based section covering it.

What changed

• Added a How to download your workflow configuration section to docs/articles/new-expensify/workspaces/Workspace-Workflows.md with steps to open Workflows > More > Download workflows, plus a note on the offline behavior.

Label verification

UI labels used in the article (Workflows tab, More button, Download workflows item) were taken verbatim from the strings shipped in #98161 (common.more, spreadsheet.downloadWorkflows). I was unable to confirm them against the live UI because the test session wasn't authenticated during this run, so please double-check the exact on-screen labels when reviewing.

@truph01, please review the files changed and confirm they reflect the current behavior. Then post a new comment saying @MelvinBot mark this PR as ready for review.

[MelvinBot]

I looked into the failing checks. There's nothing to fix here with a code change.

The only failing check is Check independent approval — every real CI check is passing (check, verify, dryRun, spellcheck, validate, verifySignedCommits, etc.).

That check isn't a build/test failure. It fails because this PR was opened by MelvinBot and still needs an approval from an independent human reviewer (someone other than the author). It will turn green automatically once the PR is reviewed and approved — there's no branch change that can clear it.

Next step: review the changed docs and, once they look right, mark the PR ready for review and approve it (or have another reviewer approve). Per the PR description, you can also reply with @MelvinBot mark this PR as ready for review.