use key for list of components (#3227)

* use key for list of components

* address review

* actually address feedback

Author: kev1n-peters

wormhole-connect/src/views/v2/Bridge/AssetPicker/ChainList.tsx

@@ -115,9 +115,8 @@ const ChainList = (props: Props) => {
     return (
       <List component={Stack} direction="row">
         {topChains.map((chain: ChainConfig) => (
-          <Tooltip title={chain.displayName}>
+          <Tooltip key={chain.key} title={chain.displayName}>
             <ListItemButton
-              key={chain.key}
               selected={selectedChainConfig?.key === chain.key}
               className={classes.chainButton}
               onClick={() => onChainSelect(chain.key)}