perf: use JSON.parse instead of JSON5.parse for sessions.json (~35x faster) (#14530)

Co-authored-by: hyf0-agent <hyf0-agent@users.noreply.github.com>

src/config/sessions/store.ts

@@ -1,4 +1,3 @@
-import JSON5 from "json5";
 import crypto from "node:crypto";
 import fs from "node:fs";
 import path from "node:path";
@@ -144,7 +143,7 @@ export function loadSessionStore(
   let mtimeMs = getFileMtimeMs(storePath);
   try {
     const raw = fs.readFileSync(storePath, "utf-8");
-    const parsed = JSON5.parse(raw);
+    const parsed = JSON.parse(raw);
     if (isSessionStoreRecord(parsed)) {
       store = parsed;
     }