Fixes#22537
- [x] check for test failures in CE & EE
- [ ] check for merge conflicts in EE (index.js)
## Description
cy command : `LoginFromAPI`
We were calling the login API as a XHR call and navigated to
`/applications` manually in cases where login has actually failed.
Login success & errors are now handled properly.
- Now it will behave like submitting a form.
(https://docs.cypress.io/api/commands/visit#Submit-a-form)
- Performs navigation to `/applications` automatically on login success.
- Performs navigation to `/login?error=true` automatically on login
failure.
- Added origin as a header.
## Media
Before: (navigates to /application even when login fails)
https://www.loom.com/share/086ef8c743ab460194b785a4d22e87cf
Now: (stops when login fails)
https://www.loom.com/share/cc78be2ee2944d0ab9f094f8fd709539
## Type of change
- Chore (housekeeping or task changes that don't impact user perception)
## How Has This Been Tested?
- Cypress
## Checklist:
### Dev activity
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag
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