fix recursive queue flush

[alicesaidhi]

fixes a bug where a effect calling batch would result in a recursive queue flush due to it updating the effect too. also removes the error since the behavior for it changed to start flushing from when the batch call was started rather than flushing the entire update_queue

[centau]

your unit tests aren't nearly comprehensive enough, you only check if the assertion still exists and not if batching within reactive scopes actually work in various graph setups

[centau]

why swap this?

the order decides if deferred evaluations from batching will be batched themselves, you've chosen that they won't - why?

[centau]

this is turning a footgun into a footbomb