docs: add `bypassCustomProtocolHandlers` to `ses.fetch` (#40421)

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Brandon Fowler <[email protected]>

docs/api/session.md

@@ -785,7 +785,7 @@ Returns `Promise<void>` - Resolves when all connections are closed.
 #### `ses.fetch(input[, init])`
 
 * `input` string | [GlobalRequest](https://nodejs.org/api/globals.html#request)
-* `init` [RequestInit](https://developer.mozilla.org/en-US/docs/Web/API/fetch#options) (optional)
+* `init` [RequestInit](https://developer.mozilla.org/en-US/docs/Web/API/fetch#options) & { bypassCustomProtocolHandlers?: boolean } (optional)
 
 Returns `Promise<GlobalResponse>` - see [Response](https://developer.mozilla.org/en-US/docs/Web/API/Response).