Fix default check response status

[tanveergill]

Description of change

Checklist

• [x] Tested in playground or other setup
• [ ] Screenshot (Grafana) from playground added to PR for 15+ minute run
• [ ] Documentation is changed or added
• [ ] Tests and/or benchmarks are included
• [ ] Breaking changes

Summary by CodeRabbit

• Refactor

  • Improved log messaging for empty request IDs with appropriate log levels.

• New Features

  • Enhanced flow control policies with the ability to specify default response status codes for denied requests.

[coderabbitai[bot]]

Walkthrough

The changes involve logging and request handling enhancements in an observability collector and a flow control engine. A log level was modified to Autosample for empty request IDs, and the flow control engine now includes a default status code for denied responses, with the code being set if not provided explicitly.

Changes

File Path	Change Summary
.../metricsprocessor/processor.go	Updated log level to Autosample for empty request ID warning.
.../policies/flowcontrol/engine.go	Added defaultDeniedResponseStatusCode to LimiterType; updated ProcessRequest to handle new default status code.

🐇✨ In the burrow of code, changes are afoot, Logs whisper softly, as flows take a new route. With every hop forward, a status code set, A rabbit's work done, with no regret. 🌟 🐇💻

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