Feat: Modify the default style of the agent node anchor #9869 (#10489)

### What problem does this PR solve?

Feat: Modify the default style of the agent node anchor #9869

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/agent/canvas/edge/index.tsx

@@ -102,7 +102,7 @@ function InnerButtonEdge({
           ...showHighlight,
           ...placeholderHighlightStyle,
         }}
-        className={cn('text-text-secondary')}
+        className={cn('text-text-disabled')}
       />
 
       <EdgeLabelRenderer>