test(cli): add renderNodes to tokens.test figma client mock

CI typecheck caught the tokens.test mock missing the new renderNodes
member on FigmaClient (asset/component mocks were updated, this one was
missed).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/cli/src/commands/figma/tokens.test.ts

@@ -15,6 +15,7 @@ afterEach(() => rmSync(dir, { recursive: true, force: true }));
 function client(overrides: Partial<FigmaClient>): FigmaClient {
   return {
     renderNode: () => Promise.reject(new Error("unused")),
+    renderNodes: () => Promise.reject(new Error("unused")),
     imageFills: () => Promise.resolve(new Map()),
     variables: () =>
       Promise.resolve({