chore: add video size for events payload

[YuJianghao]

Pull Request Template

Description

Add videoWidth and videoHeight properties to events payload.

How Has This Been Tested?

• [x] Run examples locally, listeners can receive these properties.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] Any dependent changes have been merged and published in downstream modules