A newly selected file has no server upload record yet, so the UI calls the
progress renderer with zero completed chunks and zero total chunks. Treating
that zero-total state as complete made the progress bar jump to 100% before
any upload had started.
Render zero-total progress as empty instead. Existing resumable uploads still
show their server-authoritative completed chunk percentage, and completed
non-empty uploads still render as full because their completed count equals a
non-zero total.
Test Plan:
- just static-check
- just test
- git diff --check
ddidderr
a7b3abd54a