Fix rewind before thread id initialization

Allow rewind restore confirmation when the picker was opened before a thread id has been configured. This keeps the existing session mismatch guard while treating None as a valid captured thread identity.

Verified with focused rewind regression tests and release-fast build for 0.130.8.

Co-authored-by: Open Codex <hff582580@gmail.com>

Author: LEON-gittech

codex-cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@leonw24/open-codex",
-  "version": "0.130.7",
+  "version": "0.130.8",
   "license": "Apache-2.0",
   "bin": {
     "open-codex": "bin/codex.js"