Change user role to org admin in user list endpoint

[Sujanadh]

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation
• 🧑‍💻 Refactor
• ✅ Test
• 🤖 Build or CI
• ❓ Other (please specify)

Related Issue

• Previously, the project admin role was used to fetch the users list, thinking that one project admin can add another project admin but during project creation we won't have project id to check if the user is project admin or not since to create project they need to be org admin

Describe this PR

• Update role dependency to org_admin in backend to fetch users list
• Passed org id as a query param from frontend

Screenshots

N/A

Alternative Approaches Considered

Did you attempt any other approaches that are not documented in code?

Review Guide

Notes for the reviewer. How to test this change?

Checklist before requesting a review

• 📖 Read the FMTM Contributing Guide: https://github.com/hotosm/fmtm/blob/main/CONTRIBUTING.md
• 📖 Read the HOT Code of Conduct: https://docs.hotosm.org/code-of-conduct
• 👷‍♀️ Create small PRs. In most cases, this will be possible.
• ✅ Provide tests for your changes.
• 📝 Use descriptive commit messages.
• 📗 Update any related documentation and include any relevant screenshots.

[optional] What gif best describes this PR or how it makes you feel?

[spwoodcock]

We need both the capability to access all users on FMTM (admin only), plus also users per project (project manager) I think?

So either we need a separate endpoint for these cases, or we need another way to handle this with one endpoint.

I don't think this change will work for both 😅