gh rewire-pipeline : ensure ADO pipelines configured and enabled per branch policy

## Description

Our focus is on migrating existing Azure DevOps repositories to GitHub while using the existing pipelines. We currently anticipate doing this in two phases using the GEI migration tooling. The first step will migrate the repository and the second will "rewire" all the existing pipelines to use GitHub.

When "rewire" is invoked after migration, pipelines would only build on manual triggers or CI pushes. Pull request triggers and build status reporting had to be manually configured in Azure DevOps UI.

**Expected**: All original trigger configurations (pullRequest, continuousIntegration, etc.) are automatically preserved during migration.