Ctrl-C during interactive dependency selection breaks bash

[gjoseph92]

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: macOS High Sierra 10.13.6, bash 3.2 (system)
• Poetry version: 1.0.3
• Link of a Gist with the contents of your pyproject.toml file: N/A

Issue

Likely very related to #1593.

If I interrupt (ctrl-c) while interactively selecting dependencies, no characters are echoed in the shell, and prompts show up on the same line when hitting Return. Blindly typing reset (as mentioned here) fixes things.

gabejoseph ~/proj/poetry-test3 $ poetry init

This command will guide you through creating your pyproject.toml config.

Package name [poetry-test3]:  
Version [0.1.0]:  
Description []:  
Author [Gabe Joseph <gabe@descarteslabs.com>, n to skip]:  
License []:  
Compatible Python versions [^3.6]:  

Would you like to define your main dependencies interactively? (yes/no) [yes] 
You can specify a package in the following forms:
  - A single name (requests)
  - A name and a constraint (requests ^2.23.0)
  - A git url (git+https://github.com/python-poetry/poetry.git)
  - A git url with a revision (git+https://github.com/python-poetry/poetry.git#develop)
  - A file path (../my-package/my-package.whl)
  - A directory (../my-package/)
  - An url (https://example.com/packages/my-package-0.1.0.tar.gz)

Search for package to add (or leave blank to continue): foobar
Found 20 packages matching foobar

Enter package # to add, or the complete package name if it is not listed: 
 [0] foobar
 [1] foobar2
 [2] duckietown-foobar
 [3] django-foobar
 [4] ModernGL.ext.foobar
 [5] pytest-check-mk
 [6] qoob
 [7] pyfoobar
 [8] sower
 [9] pyctrie
# I hit Ctrl-C here. Poetry exits, but the shell is then in a 'broken state'
 > gabejoseph ~/proj/poetry-test3 $ gabejoseph ~/proj/poetry-test3 $ gabejoseph ~/proj/poetry-test3 $ 
# ^ hitting return puts a new prompt on the same line. no characters are echoed when typing.

[finswimmer]

Fixed on cleo's side python-poetry/cleo#240

[github-actions]

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