fix(chat): drop unused correlationId from safety-net combo redirect (#10039)

handleComboChat's HandleComboChatOptions has no correlationId member and
the combo pipeline never consumes it; the property was copied from the
handleSingleModelChat options shape by accident and introduced a new
TS2353 under the open-sse workspace typecheck gate.

src/sse/handlers/chat.ts

@@ -1150,7 +1150,6 @@ async function handleSingleModelChat(
       allCombos: [],
       relayOptions: undefined,
       signal: request?.signal ?? null,
-      correlationId: runtimeOptions?.correlationId ?? null,
       // #9654 Wave 2: safety-net redirect — same per-target probe as the primary path.
       perTargetAdmission: chatAdmission.createPerTargetAdmissionHookForRequest(
         apiKeyInfo?.id,