Improve WebSocket error messages for CONNECTING state

The send() and ping() methods throw "INVALID_STATE_ERR" which is
an opaque error code that doesn't tell the developer what went wrong.
Updated to descriptive messages that explain the actual issue,
matching the style used by browser WebSocket implementations.

Author: Nedunchezhiyan-M

packages/react-native/Libraries/WebSocket/WebSocket.js

@@ -181,7 +181,9 @@ class WebSocket extends EventTarget {
 
   send(data: string | ArrayBuffer | ArrayBufferView | Blob): void {
     if (this.readyState === this.CONNECTING) {
-      throw new Error('INVALID_STATE_ERR');
+      throw new Error(
+        "Failed to execute 'send' on 'WebSocket': Still in CONNECTING state",
+      );
     }
 
     if (data instanceof Blob) {
@@ -208,7 +210,9 @@ class WebSocket extends EventTarget {
 
   ping(): void {
     if (this.readyState === this.CONNECTING) {
-      throw new Error('INVALID_STATE_ERR');
+      throw new Error(
+        "Failed to execute 'ping' on 'WebSocket': Still in CONNECTING state",
+      );
     }
 
     NativeWebSocketModule.ping(this._socketId);