Fix: use new button (#5384)

web/app/components/header/account-setting/model-provider-page/model-modal/model-load-balancing-entry-modal.tsx

@@ -289,7 +289,7 @@ const ModelLoadBalancingEntryModal: FC<ModelModalProps> = ({
                   </Button>
                   <Button
                     className='h-9 text-sm font-medium'
-                    type='primary'
+                    variant='primary'
                     onClick={handleSave}
                     disabled={loading || filteredRequiredFormSchemas.some(item => value[item.variable] === undefined)}
                   >

web/app/components/header/account-setting/model-provider-page/provider-added-card/model-load-balancing-modal.tsx

@@ -171,7 +171,7 @@ const ModelLoadBalancingModal = ({ provider, model, open = false, onClose, onSav
             <div className='flex items-center justify-end gap-2 mt-6'>
               <Button onClick={onClose}>{t('common.operation.cancel')}</Button>
               <Button
-                type='primary'
+                variant='primary'
                 onClick={handleSave}
                 disabled={
                   loading