ui(admin): lower table loader height

fixes tables growing while the page is loading, this is very noticable
when latency to the API is low, which means the loader is only visible
for 1/30th to 1/20th of a second.

resources/scripts/components/admin/AdminTable.tsx

@@ -190,7 +190,7 @@ export function Pagination<T> ({ data, onPageSelect, children }: Props<T>) {
 
 export const Loading = () => {
     return (
-        <div css={tw`w-full flex flex-col items-center justify-center`} style={{ height: '24rem' }}>
+        <div css={tw`w-full flex flex-col items-center justify-center`} style={{ height: '3rem' }}>
             <Spinner size={'base'}/>
         </div>
     );