Poetry 1.3.1 and up (including 1.4.0) seems to strip quotes from run command

[nagulv]

• Poetry version: Poetry (version 1.3.2)
• Python version: 3.8.8
• OS version and name: Windows 11

• [x] I am on the latest stable Poetry version, installed using a recommended method.
• [x] I have searched the issues of this repo and believe that this is not a duplicate.
• [x] I have consulted the FAQ and blog for any relevant entries or release notes.
• [x] If an exception occurs when executing a command, I executed it again in debug mode (-vvv option) and have included the output below.

Issue

Running black with the --exclude ".*_pb2.py|.local_env" option works on poetry 1.1.13. It fails on upgrading to poetry 1.3.2. The command seems to behave like the double-quotes are missing (i.e. I can reproduce the same error message on 1.1.13 by running the command without the double quotes.

C:\dev\proj_py> poetry.exe -vvv run black --check --exclude ".*_pb2.py|.local_env" . --verbose
Loading configuration file C:\Users\Nagul\AppData\Roaming\pypoetry\config.toml
Loading configuration file C:\dev\proj_py\poetry.toml
Using virtualenv: .local_env\proj-py-hxOVy_5E-py3.8
'.local_env' is not recognized as an internal or external command,
operable program or batch file.

C:\dev\proj_py> cat poetry.toml
[virtualenvs]
path = ".local_env"