…32991)

Inferred effect dependencies and inlined jsx (both experimental
features) rely on `InferReactivePlaces` to determine their dependencies.


Since adding type inference for phi nodes
(#30796), we have been incorrectly
inferring stable-typed value blocks (e.g. `props.cond ? setState1 :
setState2`) as non-reactive. This fix patches InferReactivePlaces
instead of adding a new pass since we want non-reactivity propagated
correctly

When effect dependencies cannot be inferred due to memoization-related
bailouts or unexpected mutable ranges (which currently often have to do
with writes to refs), fall back to traversing the effect lambda itself.

This fallback uses the same logic as PropagateScopeDependencies:
1. Collect a sidemap of loads and property loads
2. Find hoistable accesses from the control flow graph. Note that here,
we currently take into account the mutable ranges of instructions (see
`mutate-after-useeffect-granular-access` fixture)
3. Collect the set of property paths accessed by the effect
4. Merge to get the set of minimal dependencies

Since the very beginning we have had the `progressiveChunkSize` option
but we never actually took advantage of it because we didn't count the
bytes that we emitted. This starts counting the bytes by taking a pass
over the added chunks each time a segment completes.

That allows us to outline a Suspense boundary to stream in late even if
it is already loaded by the time that back-pressure flow and in a
`prerender`. Meaning it gets inserted with script.

The effect can be seen in the fixture where if you have large HTML
content that can block initial paint (thanks to
[`rel="expect"`](#33016) but also
nested Suspense boundaries). Before this fix, the paint would be blocked
until the large content loaded. This lets us paint the fallback first in
the case that the raw bytes of the content takes a while to download.

You can set it to `Infinity` to opt-out. E.g. if you want to ensure
there's never any scripts. It's always set to `Infinity` in
`renderToHTML` and the legacy `renderToString`.

One downside is that if we might choose to outline a boundary, we need
to let its fallback complete.

We don't currently discount the size of the fallback but really just
consider them additive even though in theory the fallback itself could
also add significant size or even more than the content. It should maybe
really be considered the delta but that would require us to track the
size of the fallback separately which is tricky.

One problem with the current heuristic is that we just consider the size
of the boundary content itself down to the next boundary. If you have a
lot of small boundaries adding up, it'll never kick in. I intend to
address that in a follow up.