Split shared OTLP backend import into Sentry, Grafana, and Datadog components

[Copilot]

This change decomposes the combined OTLP backend shared import into backend-specific shared workflow components. The smoke OTEL workflow now composes Sentry, Grafana, and Datadog explicitly instead of pulling a single bundled import.

• What changed

  • Added dedicated shared imports:
    • .github/workflows/shared/sentry.md
    • .github/workflows/shared/grafana.md
    • .github/workflows/shared/datadog.md
  • Removed the combined .github/workflows/shared/otlp-backends.md
  • Updated smoke-otel-backends.md to import the three backend-specific files directly
  • Regenerated smoke-otel-backends.lock.yml to reflect the new import graph

• Why this shape

  • Makes backend configuration reusable independently
  • Avoids coupling Sentry, Grafana, and Datadog when a workflow only needs a subset
  • Keeps secrets, network rules, and OTLP endpoint config scoped per backend

• Import change

  imports:
    - shared/sentry.md
    - shared/grafana.md
    - shared/datadog.md

[Copilot]

Pull request overview

This PR splits the shared OTLP backend configuration into backend-specific workflow imports and updates the smoke OTEL workflow to compose them directly.

Changes:

• Replaces the bundled OTLP backend import with separate Sentry, Grafana, and Datadog imports.
• Adds standalone shared OTLP configuration files for Sentry and Grafana, and narrows Datadog to Datadog-only settings.
• Regenerates the smoke OTEL lock file for the new import graph.

Show a summary per file

File	Description
.github/workflows/smoke-otel-backends.md	Imports backend-specific OTLP shared components directly.
.github/workflows/smoke-otel-backends.lock.yml	Regenerated compiled workflow for the updated imports.
.github/workflows/shared/sentry.md	Adds reusable Sentry OTLP endpoint, headers, and network allowlist.
.github/workflows/shared/grafana.md	Adds reusable Grafana OTLP endpoint, headers, and network allowlist.
.github/workflows/shared/datadog.md	Narrows shared Datadog config to only Datadog OTLP settings.
pkg/workflow/expression_extraction_test.go	Applies formatting cleanup to an existing test case.

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• Files reviewed: 5/6 changed files
• Comments generated: 1