[mostafasadeghidev]

Split out of #501, per review: the upload-queue fix alone, on main.

The bug

While files were uploading, the upload queue window could not be closed. The close button worked and an effect undid it: it depended on both uploadQueue.active and the open state, so closing re-ran it, active && !open was true, and the window reopened on the next commit.

The fix

The open state moves into useUploadQueueWindow(active). It opens the window on the transition into an active upload — detected during render against the last active it saw, the "adjust state when a prop changes" pattern — and on nothing else.

• Closing hides the transfer; it does not cancel it.
• The next upload opens the window again.
• A finished transfer still leaves it open until dismissed, as before.

Doing it in render also drops the set-state-in-effect disable and the one-commit open lag.

Not included: the toolbar progress label (Uploads 3/5) and the new default position from #501. The first is a separate change that I can open on its own if you want it; I dropped the second.

Tests

uploadQueueWindow.test.tsx drives the real hook with renderHook through what a user does: an upload starts, they close the window, progress re-renders the page. With the old effect swapped back in, "stays closed after the user closes it mid-upload" fails.

Verification

bunx tsc -b                         clean
bunx eslint src/admin/pages/media   clean
bun test src/__tests__/media        all pass

Docs: the UploadQueueWindow row in docs/features/media.md.