docs: update 8-10-corporate-cards.md

[habib424]

Drafted by Ship Ship 🚢 — confidence 🟢 high

What changed

Added a new "Physical Card Delivery Tracking" section after "Managing Cards" that explains the four delivery statuses (Created, Shipped, Delivered, Rejected), where to find tracking numbers, activation instructions, and what to do if a card is rejected. Also added a brief note in the "Creating Cards" section to set expectations that physical cards show delivery progress in Light.

Source PRs

• axolotl#4316 — feat(CD-1091): add card delivery tracking

How to use this PR

1. Review the diff against the existing article — focus on accuracy and customer voice.
2. Merge if it reads well. Edit and push to this branch if it needs adjustment.
3. Close without merging if the article doesn't actually need this update.

Once we have a track record of clean drafts, we'll graduate to auto-merge with a delay buffer. For now: human-in-the-loop.