fix: prefix unused destructured param with underscore to satisfy lint

The `description` parameter in the it.each callback is only used by
Jest's template interpolation ($description in the test name), not in
the test body. Rename to `_description` to match the eslint
no-unused-vars /^_/u pattern.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: YunchuWang

packages/durabletask-js/test/orchestration_executor.spec.ts

@@ -1554,7 +1554,7 @@ describe("Orchestration Executor", () => {
     { description: "undefined", yieldedValue: undefined as any },
   ])(
     "should fail when orchestrator yields $description as its first value",
-    async ({ description, yieldedValue }) => {
+    async ({ description: _description, yieldedValue }) => {
       // An orchestrator that yields a non-Task value as its first yield should fail with a clear error
       const badOrchestrator: TOrchestrator = async function* (_ctx: OrchestrationContext): any {
         yield yieldedValue;