inlining: Don't inline concrete-eval'ed calls whose result was too large (#47371)
This undoes some of the choices made in #47283 and #47305.
As Shuhei correctly pointed out, even with the restriction to
`nothrow`, adding the extra flags on the inlined statements
results in incorrect IR. Also, my bigger motivating test case
turns out to be insufficiently optimized without the effect_free
flags (which I removed in the final revision of #47305).
I think for the time being, the best course of action here
is to just stop inlining concrete-eval'ed
calls entirely. The const result is available for inference,
so in most cases the call will get deleted. If there's an
important case we care about where this does not happen,
we should take a look at that separately.