C3 auto-update loop with pnpm 11 fixed

Patch Changes

• #14361 df43f59 Thanks @jamesopstad! - Fix infinite loop when running C3 with pnpm 11

  When invoked via pnpm create cloudflare@latest, C3 checks npm for a newer version and re-launches itself with the latest version if one is available. pnpm 11 enables the minimumReleaseAge supply-chain protection by default, so pnpm create cloudflare@latest will not resolve a version published in the last 24 hours. When the npm latest tag points at a version newer than what pnpm is willing to install, the update check stayed true and C3 re-launched itself forever.

  The relaunched process is now marked so it never re-runs the auto-update check, ensuring C3 starts up after at most one relaunch regardless of the package manager's version resolution.