fix: Add missing enricher build step to release workflows

[charlesvien]

Problem

Release workflows fail to build @posthog/agent because @posthog/enricher (a bundled dependency via noExternal) is never built beforehand. The PR check workflow (build.yml) has the correct order but the release workflows were never updated.

Changes

1. Add Build enricher package step to code-release.yml macOS job
2. Add Build enricher package step to code-release.yml Windows job
3. Add Build enricher (agent dependency) step to agent-release.yml

How did you test this?

Manually

[charlesvien]

• fix: Add missing enricher build step to release workflows #1799 👈 (View in Graphite)
• main

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[greptile-apps]

_{Reviews (1): Last reviewed commit: "Add missing enricher build step to relea..." | Re-trigger Greptile}