[SVLS-8704] Set durable_function.execution_status on END platform logs

[lym953]

Summary

• Sets durable_function.execution_status as a log attribute on END platform logs (END RequestId:) for durable function invocations
• The value is read from aws_lambda.durable_function.execution_status tag of the aws.lambda span, added by the tracer

Automated testing

• Added test_execution_status_on_end_log covering both the status-present (SUCCEEDED) and status-absent (None) cases

Manual testing

For durable functions, execution status is added to END log:

[Copilot]

Pull request overview

This PR propagates Durable Function execution status from tracer span tags into Lambda END platform logs so the log stream can be correlated with final durable execution outcomes.

Changes:

• Extract aws_lambda.durable_function.execution_status from the aws.lambda span and forward it through the invocation/logs pipeline.
• Add a new log attribute durable_function.execution_status (serialized under message.lambda) and set it on END logs.
• Add a unit test covering status-present and status-absent cases for END logs.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
bottlecap/src/traces/trace_agent.rs	Extracts execution status from span metadata and forwards it with the durable context.
bottlecap/src/tags/lambda/tags.rs	Adds the durable execution status span tag constant.
bottlecap/src/logs/processor.rs	Threads execution status through the durable context update handling.
bottlecap/src/logs/lambda/processor.rs	Stores execution status in durable context and applies it to END logs; adds a test.
bottlecap/src/logs/lambda/mod.rs	Adds durable_function.execution_status to the serialized Lambda log schema.
bottlecap/src/lifecycle/invocation/processor_service.rs	Extends the durable context forwarding command to include execution status.
bottlecap/src/lifecycle/invocation/processor.rs	Forwards execution status to the logs agent via DurableContextUpdate.