Add pre-submits for internal actions

[ianlewis]

pre-submits call the reusable workflows but the version of internal actions in those workflows is pinned. So actions do not run at the version in the pull request and thus we miss problems with changes to the actions.

We can call the actions directly in a pre-submit workflow.
https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#example-using-an-action-in-the-same-repository-as-the-workflow

• checkout-go
• checkout-node
• compute-sha256 (Add presumbit checks for internal actions #1067)
• detect-workflow
• generate-builder
  • Fix privacy-check checkout #1160
  • Restore compile-builder pre-submit #1272
• privacy-check
• rng (Add presumbit checks for internal actions #1067)
• secure-checkout (Add pre-submit for secure-checkout #1072)
• secure-download-artifact
• secure-upload-artifact

[ianlewis]

We can maybe omit some basic tests since #1075 is unpinning the internal actions. Though secure-builder-checkout will still be pinned so we may want a pre-submit for that.