UI: "1 Solana txn" style (#3098)

Resolves #2880

ui/tx/TxExternalTxs.tsx

@@ -50,13 +50,14 @@ const TxExternalTxs: React.FC<Props> = ({ data }) => {
       contentProps={{ w: { base: '300px', lg: '460px' } }}
     >
       <Link
-        _hover={{ textDecoration: 'none', color: 'hover' }}
         display="inline-flex"
         alignItems="center"
         gap={ 2 }
+        textDecorationLine="underline"
+        textDecorationStyle="dashed"
       >
         <Image src={ externalTxFeature.chainLogoUrl } alt={ externalTxFeature.chainName } boxSize={ 5 }/>
-        { data.length } { externalTxFeature.chainName } txn{ data.length > 1 ? 's' : '' }
+        { `${ data.length } ${ externalTxFeature.chainName } txn${ data.length > 1 ? 's' : '' }` }
       </Link>
     </Tooltip>
   );