Add support for .filter(Boolean)

[samdenty]

Add overload for Array.filter, removing falsy values when Boolean is passed.

[sandersn]

Problems with Array methods are being discussed at #36554, after which the proposed solutions will need extensive discussion and testing. That means the final fixes won't necessarily look like this PR.

[RyanCavanaugh]

Please track upstream at #36554. We would need this to be rolled in with all the other changes, and we also need an approved issue for all PRs. I'm particularly very concerned about making something as sensitive as filter be overloaded instead of unoverloaded.