split process_weights_for_netuid

[andreea-popescu-reef]

Description of the Change

Refactor process_weights_for_netuid so that the subtensor calls (for getting min_allowed_weights and max_weight_limit params and optionally the metagraph) remain in the original function body while the rest of the logic moves to a new process_weights function. This allows users to use directly process_weights without extra subtensor calls. No functional changes.

Alternate Designs

N/A

Possible Drawbacks

N/A

Verification Process

checked locally

Release Notes

Introduced process_weights for direct usage of process_weights_for_netuid without subtensor calls.

[thewhaleking]

Approved but should be merged through #2798