feat(Navbar): 订阅提示文案可点击跳转

- "点击管理订阅"文字改为可点击链接，直接跳转订阅页面
- 文案简化：移除"头像"二字
- 链接样式：蓝色文字 + 悬停下划线

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/components/Navbars/components/UserMenu/DesktopUserMenu.js

@@ -60,7 +60,10 @@ const DesktopUserMenu = memo(({ user }) => {
                 _focus={{ outline: 'none' }}
             >
                 <PopoverArrow bg={popoverBg} />
-                <TooltipContent subscriptionInfo={subscriptionInfo} />
+                <TooltipContent
+                    subscriptionInfo={subscriptionInfo}
+                    onNavigate={handleAvatarClick}
+                />
             </PopoverContent>
         </Popover>
     );