log: bring back output for build command loggers

The virtualenv creation resets any existing root logger, so the build command that uses a custom build script loses the ability to log anything below WARNING. Not mentioning the usual IOHandler gets swapped for the default stdout StreamHandler.

src/poetry/utils/env/env_manager.py

@@ -668,7 +668,7 @@ def build_venv(
 
         args.append(str(path))
 
-        cli_result = virtualenv.cli_run(args)
+        cli_result = virtualenv.cli_run(args, setup_logging=False)
 
         # Exclude the venv folder from from macOS Time Machine backups
         # TODO: Add backup-ignore markers for other platforms too