[BUG] Do not intercept click-through events for embedded YouTube videos

[avdept]

Describe the bug:
I have rendered iframe YouTube video. I also have a floating action button above the rendered Html(), and clicking FAB also triggers YouTube video below to start play.

Expected behavior:
It should not try to intercept clicks

Screenshots:

screencast.2023-02-13.21-03-24.mp4

Device details and Flutter/Dart/flutter_html versions:
flutter_html: 3.0.0-alpha.6

A picture of a cute animal (not mandatory but encouraged)