fix(components): update the utils path of sidebar components to correct

[bestlyg]

When I use pnpm dlx shadcn@latest add sidebar --overwrite to add sidebar component into my repo, the utils path of the component always incorrect, cause i updated the utils path in components.json in my repo, like this:

    "aliases": {
        "components": "@/components",
        "utils": "@/shadcn/utils",
        "ui": "@/shadcn/ui",
        "lib": "@/shadcn/lib",
        "hooks": "@/shadcn/hooks"
    },

The utils path of sidebar component will output import { cn } from "@/shadcn/lib/utils".
import { cn } from "@/shadcn/utils". is my expected

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