Add pagination support for large teams in utils/manage-api-users.ts

[coderabbitai]

As discussed in this PR comment, we need to add pagination support for larger teams in the admins:ls command of utils/manage-api-users.ts. Currently, it fetches only the first 500 members, which may not be sufficient for larger teams.\n\nRequester: @ajhalili2006\n\nOriginal PR: #1