* unskip failing test

* fix

* tidy up

* skip_no_async

* add comment

* - add state changes resulting from an $effect to a separate new batch
- schedule rerunning effects based on the sources that are dirty, not just rerunning them all blindly (excempting async effects which will have run by that time already)

* test

* better fix

* tests

* this fixes the last test somehow

* fix #16477

* typo

* copy over changeset from #16477

* copy over changeset from #16464

* changeset

* dedupe

* move flushing_sync check inside Batch.ensure

* unused

* flushing_sync -> is_flushing_sync

* remove flush_effects method

* dedupe declaration

* tweak

* tweak

* update comment — it _does_ feel slightly wrong, but no wronger than the rest of this cursed function

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Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>

* chore: rename form accept-charset attribute

* chore: utf-8 to lowercase

Co-authored-by: Rich Harris <hello@rich-harris.dev>

* Update .changeset/healthy-carpets-deny.md

---------

Co-authored-by: Rich Harris <hello@rich-harris.dev>

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>