refactor(ui): update knowledge graph, chunk, metadata, agent log styles (#13518)

### What problem does this PR solve?

Update UI styles:
- **Dataset** > **Knowledge graph** tooltip
- **Dataset** > **Files** > **Manage metadata** modal
- **Dataset** > **Files** > **Modify Chunking Method** > **Auto
metadata** > **Manage generation settings** modal
- **Agent** > **Canvas (Ingestion pipeline)** > **Dataflow result**

### Type of change

- [x] Refactoring

web/src/components/ui/tooltip.tsx

@@ -16,15 +16,17 @@ const TooltipContent = React.forwardRef<
   React.ElementRef<typeof TooltipPrimitive.Content>,
   React.ComponentPropsWithoutRef<typeof TooltipPrimitive.Content>
 >(({ className, sideOffset = 4, ...props }, ref) => (
-  <TooltipPrimitive.Content
-    ref={ref}
-    sideOffset={sideOffset}
-    className={cn(
-      'z-50 overflow-auto scrollbar-auto rounded-md whitespace-pre-wrap border bg-bg-base px-3 py-1.5 text-sm text-text-primary shadow-md animate-in fade-in-0 zoom-in-95 data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:zoom-out-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 max-w-[30vw]',
-      className,
-    )}
-    {...props}
-  />
+  <TooltipPrimitive.Portal>
+    <TooltipPrimitive.Content
+      ref={ref}
+      sideOffset={sideOffset}
+      className={cn(
+        'z-50 overflow-auto scrollbar-auto rounded-md whitespace-pre-wrap border bg-bg-base px-3 py-1.5 text-sm text-text-primary shadow-md animate-in fade-in-0 zoom-in-95 data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:zoom-out-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 max-w-[30vw]',
+        className,
+      )}
+      {...props}
+    />
+  </TooltipPrimitive.Portal>
 ));
 TooltipContent.displayName = TooltipPrimitive.Content.displayName;
 
@@ -35,11 +37,12 @@ export const FormTooltip = ({ tooltip }: { tooltip: React.ReactNode }) => {
     <Tooltip>
       <TooltipTrigger
         tabIndex={-1}
+        className="align-text-top"
         onClick={(e) => {
           e.preventDefault(); // Prevent clicking the tooltip from triggering form save
         }}
       >
-        <CircleQuestionMark className="size-3 ml-[2px] -translate-y-1" />
+        <CircleQuestionMark className="size-[.85em] ml-[.25em]" />
       </TooltipTrigger>
       <TooltipContent>{tooltip}</TooltipContent>
     </Tooltip>