fix: Filter out nil implementations from combine_proxy_implementation_addresses_map function result (#10943)

apps/explorer/lib/explorer/chain/transaction.ex

@@ -2058,6 +2058,7 @@ defmodule Explorer.Chain.Transaction do
         |> Enum.map(fn implementation_address_hash ->
           Map.get(implementation_addresses_with_smart_contracts, implementation_address_hash)
         end)
+        |> Enum.filter(&(!is_nil(&1)))
 
       proxy_implementation_addresses_map
       |> Map.put(proxy_implementations.proxy_address_hash, implementation_addresses_with_smart_contract_preload)