`getUserKarmaFromCurrentSubreddit` should not require moderator permissions

[shrink]

The getUserKarmaFromCurrentSubreddit method works when making the request as a moderator but not when making the request as a user. As a consequence, a user cannot get their own karma from the subreddit: an error is thrown. The behaviour is non-obvious (not documented in code, doesn't behave intuitively) so my guess is this is a bug on the reddit backend (?) i.e: the endpoint requires moderator permissions for all usernames without providing an exception for the authenticated user's username.

To reproduce: as a user (not moderator) access an app that uses getUserKarmaFromCurrentSubreddit() and receive this error:

Error: 7 PERMISSION_DENIED: only moderators can access user karma for subreddit

Discussed in Discord here: https://discord.com/channels/1050224141732687912/1050227353311248404/1458164688591388732

devvit/packages/reddit/src/models/User.ts

Lines 432 to 442 in 62336a6

	/**
	* Returns the karma for this User in the current subreddit.
	*
	* @returns The GetUserKarmaForSubredditResponse, containing the user's karma for comments and posts in the subreddit.
	*/
	async getUserKarmaFromCurrentSubreddit(): Promise<GetUserKarmaForSubredditResponse> {
	return await getRedditApiPlugins().Users.GetUserKarmaForSubreddit({
	username: this.username,
	subredditId: context.subredditId,
	});
	}

devvit/packages/reddit/src/RedditClient.ts

Lines 684 to 692 in 62336a6

	/**
	* Returns the karma for a given user in the current subreddit.
	*
	* @param username - The username of the user to get the karma for. e.g. 'spez'
	* @returns The GetUserKarmaForSubredditResponse, containing the user's karma for posts and comments in the subreddit.
	*/
	getUserKarmaFromCurrentSubreddit(username: string): Promise<GetUserKarmaForSubredditResponse> {
	return User.getUserKarmaFromCurrentSubreddit(username);
	}

[Beach-Brews]

To provide an example: I attempted to use this on Community Survey to allow survey authors to "restrict" responses from users who have a community karma over a provided threshold (e.g. users cannot respond to a survey if their subreddit karma is <1000 comment (or post or total) karma).

However, I ran into this issue when non-mods attempted to respond to surveys, since the /api endpoint to fetch survey details (and determine if they are capable of responding) would fail, since the call to getUserKarmaFromCurrentSubreddit fails due to the current user not being a moderator.

See my userUtils.ts that attempts to "check" if the current user meets the "responder criteria".

[shrink]

@slowcooked99 I saw you mention in #222 that you built this feature. I'm tagging you just in case you haven't seen this issue. Thank you :-)