Adjust IORef carrier to handle new handleCoercible idiom.

This brings us up to parity with what we expect the 1.0 interface to
look like.

cabal.project

@@ -3,4 +3,4 @@ packages: .
 source-repository-package
   type: git
   location: https://github.com/fused-effects/fused-effects.git
-  tag: 0c7d9c19b638f7fe21ac77903894308ad15b0e80
+  tag: e6282afa5eee744ccf733a1adecbd1db218e4d01

src/Control/Carrier/State/IORef.hs

@@ -68,5 +68,5 @@ instance (MonadIO m, Algebra sig m, Effect sig) => Algebra (State s :+: sig) (St
     case act of
       Put s k -> liftIO (writeIORef ref s) *> k
       Get k   -> liftIO (readIORef ref) >>= k
-  alg (R other) = StateC (handleCoercible other)
+  alg (R other) = StateC (alg (R (handleCoercible other)))
   {-# INLINE alg #-}