fix(cli): convert syncers test fixture actions to ordered array

Same CLI fix as before, missed in the previous sweep — the
FlowDefinitionSyncer's validate tests use a top-level VALID_FLOW
constant with the legacy dict shape that the regenerated zod schema
now rejects.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: vitorbari

apps/cli/tests/unit/lib/sync/syncers.test.ts

@@ -126,7 +126,7 @@ const VALID_FLOW = {
   user_schema:
     "https://raw.githubusercontent.com/zitadel/nextgen/refs/heads/main/api/openapi/endpoints/schemas/human-user.yaml",
   purposes: { login: "identifier" },
-  steps: [{ name: "identifier", fields: [], actions: {}, gates: {} }],
+  steps: [{ name: "identifier", fields: [], actions: [], gates: {} }],
 };
 
 describe("FlowDefinitionSyncer", () => {