fix crash when removing ability in build modal

components/builds/BuildCard.tsx

@@ -220,7 +220,7 @@ const BuildCard: React.FC<BuildCardProps & BoxProps> = ({
             <Box>
               <Box>
                 {build.modes.map((mode) => (
-                  <Box as="span" mr={1}>
+                  <Box key={mode} as="span" mr={1}>
                     <ModeImage mode={mode} size={24} />
                   </Box>
                 ))}

components/u/BuildModal.tsx

@@ -196,9 +196,9 @@ const BuildModal: React.FC<Props> = ({ onClose, build }) => {
                                     shoesAbilities: onShoesChange,
                                   };
 
-                                  const newAbilityArray = {
+                                  const newAbilityArray = [
                                     ...abilityArrays[gear],
-                                  };
+                                  ];
 
                                   newAbilityArray[index] = "UNKNOWN";
                                   onChange[gear](newAbilityArray);