backend/address_space: drop spurious !StrictProvenance guard

This dates back to the much earlier design that required the use of an authority
map.  Since the current CHERI design does not, go ahead and ask the platform
whenever underlying allocation requests are sufficiently aligned.

src/backend/address_space.h

@@ -53,12 +53,10 @@ namespace snmalloc
       SNMALLOC_ASSERT(size >= sizeof(void*));
 
       /*
-       * For sufficiently large allocations with platforms that support
-       * aligned allocations and architectures that don't require
-       * StrictProvenance, try asking the platform first.
+       * For sufficiently large allocations with platforms that support aligned
+       * allocations, try asking the platform directly.
        */
-      if constexpr (
-        pal_supports<AlignedAllocation, PAL> && !aal_supports<StrictProvenance>)
+      if constexpr (pal_supports<AlignedAllocation, PAL>)
       {
         if (size >= PAL::minimum_alloc_size)
         {