NewsChannel is not returned by Message.MentionType.CHANNEL

[RedcodesDev]

General Troubleshooting

• I have checked for similar issues.
• I have updated to the latest JDA version.
• I have checked the branches or the maintainers' PRs for upcoming bug fixes.

Bug Report

Message.MentionType.CHANNEL does not return NewsChannels. This was discovered by @ItzKiwiSap in #2027.
I am using 5.0.0-alpha.6. I also tried v4 and it worked perfectly fine.

Expected Behavior

Message.MentionType.CHANNEL should also return NewsChannels.

Code Example or Reproduction Steps

public void onMessageReceived(MessageReceivedEvent e) {

	List<IMentionable> mentionedChannels = e.getMessage().getMentions(Message.MentionType.CHANNEL);
	if (mentionedChannels.isEmpty()) {
		System.out.println("empty");
		return;
	}

}

1. Mention a normal TextChannel in a message - nothing will be returned.
2. Mention a NewsChannel in a message - empty will be returned, indicating that there is no Channel Mention in the Message according to the JDA.

Code for JDABuilder or DefaultShardManagerBuilder Used

JDABuilder builder = JDABuilder.createDefault(token);

builder.setActivity(Activity.watching("Bot starting..."));
builder.setStatus(OnlineStatus.IDLE);

List<GatewayIntent> intents = new ArrayList<GatewayIntent>();
intents.addAll(EnumSet.allOf(GatewayIntent.class));
intents.remove(GatewayIntent.GUILD_PRESENCES);

builder.setEnabledIntents(intents);
builder.setMemberCachePolicy(MemberCachePolicy.ALL);
		
builder.addEventListeners(new MessageTest());

Exception or Error

N/A

[MinnDevelopment]

This will should get fixed in #2015

[MinnDevelopment]

You can now use Message#getMentions and Mentions#getChannels as of 5.0.0-alpha.12