feat: use elastic apm instrumentation

[sebastiendan]

Description

This PR goes with its dapp-frontend-erc20-messaging sibling and consists in replacing the OpenTelemetry instrumentation with the Elastic APM one.

PR Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added or updated tests that comprehensively prove my change is effective or that my feature works

[sebastiendan]

Note: This test fails for some unknown reason, not blocking so will merge