Typescript SDK: Fix to actually use the passed onclose function (#3152)

# Description of Changes

Fixes a Typescript SDK bug where onclose of WebsocketDecompressAdapter
is never called

# API and ABI breaking changes
None
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corresponding GitHub label. -->

# Expected complexity level and risk

Potential risk as Typescript SDK consumers might be currently relying
only on onConnectError to report disconnection. Users should instead use
onDisconnect, or can simply subscribe to both callbacks with the same
function again to get the same functionality.

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This is a trivial change, but could have minor repercussions on current
code. I'd still say it's a level 1 change, with consumers able to easily
change to the correct callback.
# Testing

<!-- Describe any testing you've done, and any testing you'd like your
reviewers to do,
so that you're confident that all the changes work as expected! -->

Author: natebot13

sdks/typescript/packages/sdk/src/websocket_decompress_adapter.ts

@@ -37,6 +37,10 @@ export class WebsocketDecompressAdapter {
     this.onerror?.(msg);
   }
 
+  #handleOnClose(msg: any) {
+    this.onclose?.(msg);
+  }
+
   send(msg: any): void {
     this.#ws.send(msg);
   }
@@ -53,7 +57,7 @@ export class WebsocketDecompressAdapter {
 
     ws.onmessage = this.#handleOnMessage.bind(this);
     ws.onerror = this.#handleOnError.bind(this);
-    ws.onclose = this.#handleOnError.bind(this);
+    ws.onclose = this.#handleOnClose.bind(this);
     ws.onopen = this.#handleOnOpen.bind(this);
 
     ws.binaryType = 'arraybuffer';