benchmark: fix api restriction for the permission category

give appropriate permissions to the following scripts:

* permission-processhas-fs-read.js: 'ChildProcess' permission
* permission-startup.js: 'FileSystemRead' permission
  > Paths delimited by comma (,) are no longer allowed.

Refs: https://github.com/nodejs/node/blob/main/doc/api/cli.md#--allow-fs-read
Signed-off-by: Ryan Qian <i@bitbili.net>

benchmark/permission/permission-processhas-fs-read.js

@@ -13,6 +13,7 @@ const options = {
   flags: [
     '--experimental-permission',
     `--allow-fs-read=${rootPath}`,
+    '--allow-child-process',
   ],
 };
 

benchmark/permission/permission-startup.js

@@ -47,12 +47,14 @@ function spawnProcess(script, bench, state) {
 
 function main({ count, script, nFiles, prefixPath }) {
   script = path.resolve(__dirname, '../../', `${script}.js`);
-  const files = mockFiles(nFiles, prefixPath).join(',');
   const optionsWithScript = [
     '--experimental-permission',
-    `--allow-fs-read=${files},${script}`,
-    script,
+    `--allow-fs-read=${script}`,
   ];
+  for (const file of mockFiles(nFiles, prefixPath)) {
+    optionsWithScript.push("--allow-fs-read=" + file)
+  }
+  optionsWithScript.push(script)
   const warmup = 3;
   const state = { count, finished: -warmup };
   spawnProcess(optionsWithScript, bench, state);