Standardize Variable and Function Naming in mempool and network modules

[vipocenka]

This PR updates variable and function names in coordinator.rs and dummy.rs to improve consistency and readability in the codebase. These changes align with standard naming conventions and reduce potential confusion.

Changes:

• Updated num_committed_txns_recieved_since_peers_updated → num_committed_txns_received_since_peers_updated in coordinator.rs
• Standardized rpc_protocls → rpc_protocols in dummy.rs

Tests

Since no functional changes were introduced, existing tests should sufficiently cover the modifications.

[trunk-io]

⏱️ 5s total CI duration on this PR

Job	Cumulative Duration	Recent Runs
permission-check	3s	🟥
permission-check	2s	🟥

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