Issue:
fix(invite): set user status to invitation sent if a registered user is invited

Resolution:
<think>
PR Context:
- Title: feat(invite_multiple): Set status of user as `InvitationSent` if `email` feature flag is enabled
- Merged: 2024-02-21T14:52:33Z
- Files changed: 1 files
- Commits: 1 commits

Implementation approach:

## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [ ] New feature
- [ ] Enhancement
- [x] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->
This PR will set the status of the user who has been invited but already registered with Hyperswitch as InvitationSent

### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] Th
</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** feat(invite_multiple): Set status of user as `InvitationSent` if `email` feature flag is enabled (#3
Files to modify:


**crates/router/src/core/user.rs**
  Modify existing code