[Wasm GC] Fix SignaturePruning on CallWithoutEffects (#4882)

call.without.effects will turn into a normal call of the last parameter later,

(call $call.without.effects
  A
  B
  (ref.func $foo)
)
;; => intrinsic lowering
(call $foo
  A
  B
)

SignaturePruning needs to be aware of that: we can't remove a parameter from $foo without
also updating relevant calls to $call.without.effects. Rather than handle that, just skip such
cases, and leave them to be optimized after intrinsics are lowered away.

0 files changed, 0 insertions, 0 deletions