[EW] no RUM (click) events are captured while in layout mode

If the user is in EW canvas layout mode we do not capture any RUM (click) events. While `ew-editor-doc` events are logged in RUM, `ew-wysiwyg-doc` are not. We should also make sure we capture events inside the iframe, like opening a dialog or using the toolbar.

Trace the existing RUM capture path for `ew-editor-doc` and compare it with the missing `ew-wysiwyg-doc` events. Exercise layout mode interactions inside the iframe, including opening a dialog and using the toolbar; done means those clicks are captured in RUM as well.

Written by the indexing model from the issue text.