[node] fix: stream depends on global Blob not available in v16

Blob is only available on the global object starting in Node 18. Still,
the `stream` definitions used the global Blob. This means that
`@types/node` 16.x is currently broken. This patch adds the correct
import to resolve this problem. For more info please refer to DefinitelyTyped#62654.

Long-term, IMHO we should remove `"lib": ["dom"]` from the v16 TSConfig
like it was already done for v18, but I'd much rather get this fix out
quickly and worry about that later.

types/node/v16/stream.d.ts

@@ -18,6 +18,7 @@
  */
 declare module 'stream' {
     import { EventEmitter, Abortable } from 'node:events';
+    import { Blob } from 'node:buffer';
     import * as streamPromises from 'node:stream/promises';
     import * as streamConsumers from 'node:stream/consumers';
     class internal extends EventEmitter {

types/node/v16/ts4.8/stream.d.ts

@@ -18,6 +18,7 @@
  */
 declare module 'stream' {
     import { EventEmitter, Abortable } from 'node:events';
+    import { Blob } from 'node:buffer';
     import * as streamPromises from 'node:stream/promises';
     import * as streamConsumers from 'node:stream/consumers';
     class internal extends EventEmitter {