Update how users and invitations are managed within the system
Corrects the API request method for resending invitations, deleting invitations, and manually creating users in the `InvitationManagement` component. Replit-Commit-Author: Agent Replit-Commit-Session-Id: 3a22ac80-cd1d-4441-9e36-f24fc2f4c3de Replit-Commit-Checkpoint-Type: intermediate_checkpoint Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/3478f7c3-db8c-4fca-9165-3adbdf1b5829/3a22ac80-cd1d-4441-9e36-f24fc2f4c3de/gBqmpbl
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