fix: emit resume event, silent disconnects, error event param (#3192)

* src: Fix shardResumed event not being emitted

* docs: Document Client#error again

* src: Fix onError due to incorrect typings

* src: handle onError properly for both uws and ws

* src: Try to fix silent disconnects when using uWs

* fix(WebSocketShard): uws emits plain objects, not errors

Emitting line of code: 39aa429f94/src/uws.js (L80-L83)
Listener attaching is here: https://github.com/discordjs/uws/blob/master/src/uws.js#L128
For reference, found a clue here: https://github.com/discordjs/discord.js/issues/1528

src/client/websocket/WebSocketManager.js

@@ -194,15 +194,6 @@ class WebSocketManager {
         if (!this.shardQueue.size) this.reconnecting = false;
       });
 
-      shard.on(ShardEvents.RESUMED, () => {
-        /**
-         * Emitted when a shard resumes successfully.
-         * @event Client#shardResumed
-         * @param {number} id The shard ID that resumed
-         */
-        this.client.emit(Events.SHARD_RESUMED, shard.id);
-      });
-
       shard.on(ShardEvents.CLOSE, event => {
         if (event.code === 1000 ? this.destroyed : UNRECOVERABLE_CLOSE_CODES.includes(event.code)) {
           /**