Flower (flwr) compatibility with Python 3.14

[Sahilbhatane]

Description:
Flower federated learning library has compatibility issues with Python 3.14 due to protobuf metaclass issues.

Error:

TypeError: Metaclasses with custom tp_new are not supported.

Workaround:

• Use Python 3.11 or 3.12 for full Flower networking support
• The simulation functions (simulate_federated_maml, simulate_fedavg, etc.) work without actual Flower networking

Long-term Fix:
Wait for protobuf and Flower to add Python 3.14 support, or contribute upstream patches.