fix: use virtual: prefix for raw plugin for vite compatibility

Author: pi0

src/build/plugins/raw.ts

@@ -2,8 +2,8 @@ import { promises as fsp } from "node:fs";
 import mime from "mime";
 import type { Plugin } from "rollup";
 
-const HELPER_ID = "\0nitro-raw-helpers";
-const RESOLVED_PREFIX = "\0nitro:raw:";
+const HELPER_ID = "virtual:nitro-raw-helpers";
+const RESOLVED_PREFIX = "virtual:nitro:raw:";
 const PREFIX = "raw:";
 
 export function raw(): Plugin {

test/fixture/vite.config.ts

@@ -0,0 +1,6 @@
+import { defineConfig } from "vite";
+import { nitro } from "nitro/vite";
+
+export default defineConfig({
+  plugins: [nitro()],
+});