Editorial: note that CDATASections are Texts inside switches

[domenic]

I made a mistake and thought CDATASection was "Any other node", but actually it's a Text node. So in switches like textContent and nodeValue, I'd suggest changing "Text" to "Text (including CDATASection)"

Thoughts?

[annevk]

See #597. Note that if we did this, how should we handle Element, which has many subclasses? I guess they're not different node types, but it does seem somewhat inconsistent in a way.

[domenic]

Right, the mistake I made was switching on node type, which is probably easier than switching on inherited-from-ness in most implementations.

And yeah, no web platform tests seemed to catch this either.

[annevk]

Maybe that's a good solution in the absence of [[PlatformBrand]]. Make "type" an internal slot of nodes and branch on that everywhere.