Fix infinite loop in Reflex Profiled

The Reflex Profiled transformer had an incorrect definition for
Reflex.Class.mergeIncrementalG and
Reflex.Class.mergeIncrementalWithMoveG. Instead of calling the
transformed inner Reflex timeline, it called itself, leading to an
infinite recursion. This is fixed by coercing the type before running
mergeIncremental*.

This was introduced in 8d8ceec, and
effects Reflex v0.6.2.1, v0.6.2.2, v0.6.2.3, v0.6.2.4, v0.6.3, and
v0.6.4.

src/Reflex/Profiled.hs

@@ -147,8 +147,8 @@ instance Reflex t => Reflex (ProfiledTimeline t) where
   updated (Dynamic_Profiled d) = coerce $ profileEvent $ updated d
   unsafeBuildDynamic (ProfiledM a0) (Event_Profiled a') = coerce $ unsafeBuildDynamic a0 a'
   unsafeBuildIncremental (ProfiledM a0) (Event_Profiled a') = coerce $ unsafeBuildIncremental a0 a'
-  mergeIncrementalG nt = (Event_Profiled . coerce) #. mergeIncrementalG nt
-  mergeIncrementalWithMoveG nt = (Event_Profiled . coerce) #. mergeIncrementalWithMoveG nt
+  mergeIncrementalG nt res = Event_Profiled $ mergeIncrementalG (coerce nt) (coerce res)
+  mergeIncrementalWithMoveG nt res = Event_Profiled $ mergeIncrementalWithMoveG (coerce nt) (coerce res)
   currentIncremental (Incremental_Profiled i) = coerce $ currentIncremental i
   updatedIncremental (Incremental_Profiled i) = coerce $ profileEvent $ updatedIncremental i
   incrementalToDynamic (Incremental_Profiled i) = coerce $ incrementalToDynamic i