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

Fixes #3234

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) {