chore: fix css location compatibility issues on Safari (#4215)

chore: fix location compatibility issues on Safari

closes https://github.com/usememos/memos/issues/4190

web/src/components/MemoEditor/ActionButton/AddMemoRelationPopover.tsx

@@ -129,7 +129,7 @@ const AddMemoRelationPopover = (props: Props) => {
 
   return (
     <Popover open={popoverOpen} onOpenChange={setPopoverOpen}>
-      <PopoverTrigger className="w-9">
+      <PopoverTrigger className="w-9 relative">
         <Button className="flex items-center justify-center" size="sm" variant="plain" asChild>
           <LinkIcon className="w-5 h-5 mx-auto p-0" />
         </Button>