Check if proposed name change is an API name (#3256)

Fixes #3234

db/query.sql

@@ -101,7 +101,7 @@ UPDATE users SET authenticated_at = CURRENT_TIMESTAMP WHERE id = $1;
 SELECT id, body, hidden_at, timestamp FROM messages WHERE eventType = 'CHAT' AND user_id = $1 ORDER BY TIMESTAMP DESC;
 
 -- name: IsDisplayNameAvailable :one
-SELECT count(*) FROM users WHERE display_name = $1 AND authenticated_at is not null AND disabled_at is NULL;
+SELECT count(*) FROM users WHERE display_name = $1 AND ( type='API' OR authenticated_at IS NOT NULL ) AND disabled_at IS NULL;
 
 -- name: ChangeDisplayName :exec
 UPDATE users SET display_name = $1, previous_names = previous_names || $2, namechanged_at = $3 WHERE id = $4;

db/query.sql.go

@@ -1,6 +1,6 @@
 // Code generated by sqlc. DO NOT EDIT.
 // versions:
-//   sqlc v1.15.0
+//   sqlc v1.19.1
 // source: query.sql
 
 package db
@@ -667,7 +667,7 @@ func (q *Queries) GetUserDisplayNameByToken(ctx context.Context, token string) (
 }
 
 const isDisplayNameAvailable = `-- name: IsDisplayNameAvailable :one
-SELECT count(*) FROM users WHERE display_name = $1 AND authenticated_at is not null AND disabled_at is NULL
+SELECT count(*) FROM users WHERE display_name = $1 AND ( type='API' OR authenticated_at IS NOT NULL ) AND disabled_at IS NULL
 `
 
 func (q *Queries) IsDisplayNameAvailable(ctx context.Context, displayName string) (int64, error) {