Potential memory leak, should cleanup run clearDelegatedEvents()?

[deluksic]

Please take a look here:

https://playground.solidjs.com/anonymous/7ce4d304-07b3-48df-b742-64b0da65ccc6

I'm debugging some nasty memory leak, and discovered that Chrome can sometimes leak DOM nodes (even on refresh). This by itself is not a huge issue (slightly annoying), however, because event handlers (like $$click) are not getting removed, basically the whole ownership graph stays in memory because it's a doubly-linked tree AFAICT. You can imagine that this becomes a huge issue pretty quick.

So the question is, should these be deleted on cleanup?

There's a similar issue in React as well:
facebook/react#26069

Additionally, I noticed there's _$owner being set on custom elements that should also probably be removed (I did not check if it is, for now I just disabled this behavior using contextToCustomElements: false).