Fix: allow org and team admin to update all leaves

[mohsenk]

Allow org and team admin to allow all leaves

Description

Org and Team admins should be able to accept/reject all user's leaves.

Changes

• Summarize key changes made in this pull request.

Checklist

• Code adheres to the project’s back-end guidelines.
• Unit tests cover new functionality.
• Integration tests are added or updated.
• Exception handling is implemented consistently.
• Logging is added for critical operations.
• Database migrations (if applicable) are included and tested.
• API documentation is updated if necessary.
• Changes are reviewed for potential performance impacts.
• Security vulnerabilities are assessed and mitigated.
• Dependencies are updated or verified as compatible.
• Code is reviewed for readability and maintainability.
• Environment configurations (if any) are documented.
• Endpoints are tested for expected behavior.