## Description 

The tx_rows_committed metric was polluted by empty values.
Fixing it by skipping the entire commit if values is empty.

## Test plan 

clippy

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## Release notes

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- [ ] Protocol: 
- [ ] Nodes (Validators and Full nodes): 
- [ ] Indexer: 
- [ ] JSON-RPC: 
- [ ] GraphQL: 
- [ ] CLI: 
- [ ] Rust SDK:
- [ ] REST API: