fixed history_chart legend txs number formatting

apps/block_scout_web/assets/js/pages/chain.js

@@ -199,7 +199,7 @@ const elements = {
   '[data-selector="tx_per_day"]': {
     render ($el, state, oldState) {
       if (!(JSON.stringify(oldState.transactionStats) === JSON.stringify(state.transactionStats))) {
-        $el.empty().append(state.transactionStats[0].number_of_transactions)
+        $el.empty().append(numeral(state.transactionStats[0].number_of_transactions).format('0,0'))
       }
     }
   },

apps/block_scout_web/lib/block_scout_web/templates/chain/show.html.eex

@@ -72,7 +72,7 @@
                     <%= gettext "Tx/day" %>
                 </span>
                 <span class="dashboard-banner-chart-legend-value" data-selector="tx_per_day">
-                    <%= Enum.at(@transaction_stats, 0).number_of_transactions %>
+                    <%= Cldr.Number.to_string!(Enum.at(@transaction_stats, 0).number_of_transactions, format: "#,###") %>
                 </span>
             </div>
             <% end %>