fix: remount live slot page on network change (#288)

Add network-based key to SlotPlayerProvider to force component remount
when the network changes. This ensures the live slot page fetches fresh
data for the newly selected network rather than attempting to update
existing state in place.

Author: samcm

src/routes/ethereum/live.tsx

@@ -2,10 +2,15 @@ import type { JSX } from 'react';
 import { createFileRoute } from '@tanstack/react-router';
 import { IndexPage } from '@/pages/ethereum/live';
 import { SlotPlayerProvider } from '@/providers/SlotPlayerProvider';
+import { useNetwork } from '@/hooks/useNetwork';
 
 function LivePage(): JSX.Element {
+  const { currentNetwork } = useNetwork();
+
+  // Force remount when network changes to get fresh data for the new network
   return (
     <SlotPlayerProvider
+      key={currentNetwork?.name}
       tables={['fct_block_head', 'fct_block_first_seen_by_node', 'fct_attestation_first_seen_chunked_50ms']}
       initialPlaying={true}
     >