Fix coinn supply query: Or the value is incompatible or it must be interpolated (using ^) so it may be cast accordingly in query

apps/explorer/lib/explorer/chain.ex

@@ -1518,7 +1518,7 @@ defmodule Explorer.Chain do
         a0 in Address,
         select: fragment("SUM(a0.fetched_coin_balance)"),
         where: a0.hash != ^burn_address_hash,
-        where: a0.fetched_coin_balance > 0
+        where: a0.fetched_coin_balance > ^0
       )
 
     Repo.one!(query) || 0
@@ -1530,7 +1530,7 @@ defmodule Explorer.Chain do
       from(
         a0 in Address,
         select: fragment("SUM(a0.fetched_coin_balance)"),
-        where: a0.fetched_coin_balance > 0
+        where: a0.fetched_coin_balance > ^0
       )
 
     Repo.one!(query) || 0