[CI] Reduce duplication across workflow jobs and actions

[itsyaasir]

Summary

The CI/CD workflows now support both notarization and audit trail packages, but this has introduced duplication that should be consolidated.

Areas to improve

• shared-build-wasm.yml is parameterized but each consumer workflow still duplicates the full job definition (build + test) for each package — consider a matrix or reusable workflow pattern
• build-and-test.yml has near-identical test-wasm-notarization and test-wasm-audit-trail jobs that differ only in paths, artifact names, and env var setup
• wasm-publish.yml duplicates build/release job pairs per package — could use a matrix with include to reduce this
• upload-docs.yml duplicates S3 upload steps per package
• wasm-retag-npm.yml and wasm-publish.yml retag steps are copy-pasted per package
• Move package test/publish steps in build-and-test.yml follow the same pattern and could be consolidated

Acceptance criteria

• Reduce duplicated job definitions where possible (matrix strategies, reusable workflows, or composite actions)
• Ensure no functional regression — all existing tests and publish flows continue to work
• Keep the package selector in publish/retag workflows