fix: add refType parameter to configuration_get tool so version tags resolve correctly

[ThisIsDemetrio]

What this PR is for?

The configuration_get tool always queried the Console backend's configuration endpoint using the revisions path segment, regardless of whether the caller's refId was actually a revision name or a version tag. Since the backend route is generic (GET /projects/:projectId/:refType/:refName/configuration, supporting both revisions and versions), a version tag looked up under revisions failed to resolve and fell back to a mostly-empty configuration document (only cmsSettings/fastDataConfig remained populated).

This PR adds an explicit refType: 'revision' | 'version' parameter to configuration_get (defaulting to 'revision' to preserve existing behavior), and threads it through IAPIClient.getConfiguration and BackendClient so the correct path segment (revisions/versions) is used when querying the backend.

Tests were added first to reproduce the bug (asserting the request path used revisions even for a version ref), then the fix was implemented to make them pass, alongside new coverage for the version ref type.