Add instance to vulcan metrics (backport #2265)

[mergify]

Changelist

[Describe or list the changes made in this PR]

Test Plan

[Describe how this PR was tested (if applicable)]

Author/Reviewer Checklist

• If this PR has changes that result in a different app state given the same prior state and transaction list, manually add the state-breaking label.
• If the PR has breaking postgres changes to the indexer add the indexer-postgres-breaking label.
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• If this PR is one of many that implement a specific feature, manually label them all feature:[feature-name].
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Summary by CodeRabbit

• New Features

  • Enhanced logging and metrics tracking across various order handling processes by including instance IDs.
  • Improved service operational transparency with instance ID logging during service startup.

• Bug Fixes

  • None reported.

• Documentation

  • Added functions for retrieving instance IDs to improve clarity in metrics tracking.

• Refactor

  • Updated metrics increment calls to include instance identifiers for better observability.

---

This is an automatic backport of pull request #2265 done by [Mergify](https://mergify.com).

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