Table caption is not accessible via keyboard navigation

[mabryl]

📝 Provide detailed reproduction steps (if any)

1. Create a table with a caption
2. Try accessing the caption just by using keyboard navigation

✔️ Expected result

You should be able to access the caption element just with the keyboard.

❌ Actual result

It's impossible to access the caption by pressing Tab, Shift + Tab or by using the arrow keys.

📃 Other details

• Browser: cross-browser
• OS: cross-OS
• First affected CKEditor version: N/A
• Installed CKEditor plugins: N/A

---

If you'd like to see this fixed sooner, add a 👍 reaction to this post.

[mabryl]

Possibly related to #11834