Repl forgets it is not a debugger anymore when continued out of

[lf-]

Describe the bug

The repl should not have debugger commands when it is not a debugger. Nevertheless:

Steps To Reproduce

co/nix » nix repl --debugger --expr 'builtins.break {meow = 2; }'
Nix 2.20.0pre20240124_dirty debugger
Type :? for help.
info: breakpoint reached

nix-repl> :c
Loading installable ''...
Added 1 variables.
nix-repl> :st

nix-repl> :env

Expected behavior

Debugger commands should disappear when not in a debugger context anymore.

nix-env --version output

bd21b4b

Additional context

Add any other context about the problem here.

Priorities

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