[dynamicIO] prospectively render SSR phase if needed (#71506)
Currently dynamicIO is implemented without a prospective render of the
SSR portion. This is fine in most cases because we don't expect there to
be dynamic IO in SSR and you can't use cache APIs in this layer. However
the module scope of a lazily loaded module is semantically a static
scope but as implemented it woudl execute like it was dynamic. This
means things like triggering dynamic on reading the current time can
happen even when we would expect it not to.
The solution implemented here is to look at whether the SSR render has
synchronously dynamic results. If it does we perform the render a second
time. We only log during the second render. this way you see the
warnings once and only if they persist across render attempts. If you
read something like the current time in module scope during the first
render it won't log but on the second render the module is already
loaded so it also won't log and it won't abort the render early.
