fix(llm): drop removed dispatch option from recorded cache tests (#26900)

packages/llm/test/provider/bedrock-converse-cache.recorded.test.ts

@@ -38,9 +38,8 @@ const recorded = recordedTests({
   provider: "amazon-bedrock",
   protocol: "bedrock-converse",
   requires: ["AWS_ACCESS_KEY_ID", "AWS_SECRET_ACCESS_KEY"],
-  // Two identical requests in one cassette — match by recording order so the
-  // second call replays the cached-hit interaction.
-  options: { dispatch: "sequential" },
+  // Two identical requests in one cassette — replay walks the cassette in
+  // recording order so the second call replays the cached-hit interaction.
 })
 
 describe("Bedrock Converse cache recorded", () => {