fix solve_operations_network

[danielelerede-oet]

Closes # (if applicable).

Changes proposed in this Pull Request

Fix for solve_operations_network rule to comply with missing 'solving' argument

Checklist

• [x] I tested my contribution locally and it seems to work fine.
• [ ] Code and workflow changes are sufficiently documented.
• [ ] Changed dependencies are added to envs/environment.yaml.
• [ ] Changes in configuration options are added in all of config.default.yaml.
• [ ] Changes in configuration options are also documented in doc/configtables/*.csv.
• [ ] A release note doc/release_notes.rst is added.