Terminal left in broken state after exit when binding ctrl-c

import sys
import prompt_toolkit

from prompt_toolkit.key_binding import KeyBindings

def main():
    bindings = KeyBindings()

    @bindings.add("c-c")
    def _(event):
        sys.exit()

    session = prompt_toolkit.PromptSession(key_bindings=bindings)

    while True:
        line = session.prompt("> ")

if __name__ == '__main__':
    main()

After pressing ctrl-c, the terminal is no longer processing ctr-c (a literal ^C is inserted).

Version: 3.0.36
Terminals tested: Tilix, gnome-terminal

Start by running the provided Python reproducer with prompt_toolkit 3.0.36 and inspect PromptSession and the c-c key binding path. Confirm that exiting leaves the terminal unable to process Ctrl-C and that a literal ^C is inserted; done means the terminal handles Ctrl-C normally after exit.