Read the rest of the mesh and the network over mesh-sdk, and fail when a caller reaches for the old composition (issue 1388)

The seats, holdings, source, build-source, delivery group check, check request, backup plan, adoption (take and converge) and the network graph now read the rest of the mesh through restOfTheMesh and compose.Graph. compose_callers_test.go scans the package and names any function other than the old composition's own that still calls planFor, declarationWith, composedAndValidated, generators, renderingFor, theRestOfTheMesh or whoResolves; issue 1389 deletes those.

cmd/mesh-controller/plan_backups.go

@@ -124,7 +124,7 @@ func loadBackupFacts(ctx context.Context, inv *inventory.Inventory) (backupFacts
 		if err != nil {
 			return nil, err
 		}
-		world, err := theRestOfTheMesh(ctx, inv, shelf, "")
+		world, err := restOfTheMeshOf(ctx, inv, shelf, "")
 		if err != nil {
 			return nil, err
 		}