Fix Aggregator / Assigner leaky abstraction#1301

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ishaileshpant wants to merge 2 commits intosecurefederatedai:developfrom ishaileshpant:fix_leaky_abstraction

+159-71

Commits on Jan 23, 2025

- implement a new task_group filtering decorator in Assigner class
ishaileshpant
committed
- Fix the leaky abstraction of task_group to Aggregator
ishaileshpant
committed