Use data for Signed/Unsigned on GHC >= 9.12

Prevents `Numbers.Strict` test case from failing

Author: martijnbastiaan

clash-prelude/src/Clash/Sized/Internal/Signed.hs

@@ -184,7 +184,7 @@ type role Signed nominal
 --
 -- as it is not safe to coerce between different width Signed. To change the
 -- width, use the functions in the 'Clash.Class.Resize.Resize' class.
-#if MIN_VERSION_base(4,15,0) && !MIN_VERSION_base(4,17,0)
+#if (__GLASGOW_HASKELL__ >= 900 && __GLASGOW_HASKELL__ < 904) || __GLASGOW_HASKELL__ >= 912
 data Signed (n :: Nat) =
     -- | The constructor, 'S', and the field, 'unsafeToInteger', are not
     -- synthesizable.

clash-prelude/src/Clash/Sized/Internal/Unsigned.hs

@@ -200,7 +200,7 @@ type role Unsigned nominal
 --
 -- as it is not safe to coerce between different width Unsigned. To change the
 -- width, use the functions in the 'Clash.Class.Resize.Resize' class.
-#if MIN_VERSION_base(4,15,0) && !MIN_VERSION_base(4,17,0)
+#if (__GLASGOW_HASKELL__ >= 900 && __GLASGOW_HASKELL__ < 904) || __GLASGOW_HASKELL__ >= 912
 data Unsigned (n :: Nat) =
     -- | The constructor, 'U', and the field, 'unsafeToNatural', are not
     -- synthesizable.