And renamed it to 17.json, as we already have an unrelated 2.json.
The removed check isn't needed, as we'll check again when we
finish restoring the placeholder. It was also a false-positive
warning sometimes because boundPositionForAnchor() would fail
since the "anchors following" wasnt initialized yet, as we do
a clearAnchorsFollowing while restoring the placeholder
It doesn't make sense to only grow one side, as sometimes the item
must grow in both sizes, as the right side might now have enough
to acomodate its needs.
This also allows us to not use Anchor::ensureBounded(), as separators
being within their bounds doesn't imply min sizes being respected, while
the inverse is true
fuzzer testcase 10.json now passes