fix(deduplicate): stream response chunks to waiting handlers

Author: mcollina

docs/docs/api/Dispatcher.md

@@ -1245,6 +1245,7 @@ The `deduplicate` interceptor deduplicates concurrent identical requests. When m
 - `methods` - The [**safe** HTTP methods](https://www.rfc-editor.org/rfc/rfc9110#section-9.2.1) to deduplicate. Default `['GET']`.
 - `skipHeaderNames` - Header names that, if present in a request, will cause the request to skip deduplication entirely. Useful for headers like `idempotency-key` where presence indicates unique processing. Header name matching is case-insensitive. Default `[]`.
 - `excludeHeaderNames` - Header names to exclude from the deduplication key. Requests with different values for these headers will still be deduplicated together. Useful for headers like `x-request-id` that vary per request but shouldn't affect deduplication. Header name matching is case-insensitive. Default `[]`.
+- `maxBufferSize` - Maximum bytes buffered per paused waiting deduplicated handler. If a waiting handler remains paused and exceeds this threshold, it is failed with an abort error to prevent unbounded memory growth. Default `5 * 1024 * 1024`.
 
 **Usage**