801fd0b3d8
Stop clears frontend busy immediately while the gateway may still wind down. Edit/restore then passed interruptFirst=false and raced 4009 session busy. Keep a short per-session cooldown after cancel so rewind still interrupt-first, and expire the submit-in-flight lock so a hung submit cannot block the session forever. Fixes #83855 Co-authored-by: Olympusbuildz <Olympus.roots@outlook.com> Signed-off-by: Olympusbuildz <Olympus.roots@outlook.com>