[indexer-alt] Skip all commit metrics if values is empty

[lxfind]

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

Check each box that your changes affect. If none of the boxes relate to your changes, release notes aren't required.

For each box you select, include information after the relevant heading that describes the impact of your changes that a user might notice and any actions they must take to implement updates.

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

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Name	Status	Preview	Comments	Updated (UTC)
sui-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 22, 2024 8:11pm

3 Skipped Deployments

| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **multisig-toolkit** | ⬜️ Ignored ([Inspect](https://vercel.com/mysten-labs/multisig-toolkit/TT2VDUicUTGTfGE4Spsm5SpcMP5Y)) | | | Nov 22, 2024 8:11pm | | **sui-kiosk** | ⬜️ Ignored ([Inspect](https://vercel.com/mysten-labs/sui-kiosk/Ce1bHpAtVj295oGqqCKZyzDWpbJZ)) | | | Nov 22, 2024 8:11pm | | **sui-typescript-docs** | ⬜️ Ignored ([Inspect](https://vercel.com/mysten-labs/sui-typescript-docs/7ev5CCNuCPyozeSNJ6XcxEJREveH)) | | | Nov 22, 2024 8:11pm |