- Fix a number of issues that arose while testing a provider without a metadata service or serverInfo object returned via DMP calls. These should be optional services/features and we should be resilient to them not existing. In most places we already have these checks
- This does not cover a number of "improvement" scenarios, such as filtering extension tabs by provider, and defaulting any tabs that don't specify a provider to be MSSQL. This and some other features to ensure things make sense will be implemented in separate PRs but this unblocked the scenario