Repair coordinated lexer ownership when cloning Lark LALR interactive parsers.

Repair coordinated lexer ownership when cloning Lark LALR interactive parsers.: a task in MiMo-V2.6-RL-harbor-terminal: MiMo-V2.6-RL Terminal (Harbor) (Harbor dataset). The frozen Lark tree in /app/vendor/lark has a clone-ownership regression. Copying an InteractiveParser after partially consuming…