Force reload config before creating monorepo poetry objects

[ag14774]

After investigation, it seems that the global config object poetry.config.config._default_config is cached globally and therefore settings from subproject-local poetry.toml files persist when creating a new Poetry object using:

monorepo_root_poetry = Factory().create_poetry(cwd=monorepo_root, io=io, disable_cache=poetry.disable_cache)

Solution is to first reload the global config before creating the new monorepo Poetry object