feat: add apm span for trace dead letter event

[pietro-tota]

List of Changes

Add APM span for trace events written into dead letter queue (no attempts left for retry an user mail re-sending)

Motivation and Context

Add APM span for trace events written into dead letter queue (no attempts left for retry an user mail re-sending)

How Has This Been Tested?

Local tests with eCommerce local + test in DEV environment

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.