[Bug]: No detection of canvas mutations in same-origin iframes (+ no drawImage inlining)

Preflight Checklist

• I have searched the issue tracker for a bug report that matches the one I want to file, without success.

What package is this bug report for?

rrweb

Version

2.0.1

Expected Behavior

Hello

I am not certainly sure because for me its quite big project and its hard to read the code but during my tests i stumbled upon bug with canvas. Rrweb handle same-origin iframes only partially and do not listen for canvas mutations. It use MutationObserver which listen only for DOM changes.

Actual Behavior

No canvas updates

Steps to Reproduce

1. Create a page with a same-origin that draws on a canvas (e.g. an animation or drag-and-drop canvas captcha puzzle)
2. Record with record({ recordCanvas: true, ... }) in the parent frame
3. Replay — the initial canvas state appears correctly, but all subsequent canvas mutations are missing

Testcase Gist URL

No response

Additional Information

No response