Wait until the node applied the genesis document before the sdk step asks for a build (hq issue 615)

The packages step sealed the build agent its genesis document and pushed, and the push returned as soon
as it was sent. The sdk step then asked for the SDK's build at once, and the agent reads the document
from the file the node writes when it applies that push: one genesis found it in time, the next was
refused for having neither a binding nor the document. That one push now waits until the node reports
it applied it (push --wait); every other push still returns on sending.

internal/bootstrap/phase_packages.go

@@ -415,7 +415,12 @@ func deliverGenesisRegistry(ctx context.Context, o Options, control controlPlane
 	}
 	// Push so the sealed document reaches the build agent, which reads it at its next build — and,
 	// like every push before the adoption, the bus hears the users it carries (issue 608).
-	_, err = pushNode(ctx, o, control, say)
+	//
+	// **Waited for until the node applied it** (issue 615). The next step asks the build agent to
+	// publish the SDK, and the agent reads the document from the file the node writes when it applies
+	// this push. A push that returned on sending let the ask race the apply: one genesis found the
+	// document in time, the next was refused, "neither its binding nor the genesis document".
+	_, err = pushNodeApplied(ctx, o, control, say)
 	return err
 }