add tests and handling for deleted users

[harishv7]

Problem

Deleted users were still able to access the system and view sites they previously had access to.

Closes ISOM-1701

Solution

Added checks to prevent deleted users from logging in and viewing sites they previously had access to.

Breaking Changes:

• No - this PR is backwards compatible

Features:

• Added user deletion status check during login
• Filtered out sites where user permissions have been deleted

Improvements:

• Removed debug console log from user deletion check

Tests

• Added test for login attempt with deleted user
• Added test for site listing with deleted permissions
• Added user service tests for checking deletion status
• Added helper function for setting up test users with deletion status

New scripts:
None

New dependencies:
None

New dev dependencies:
None

[harishv7]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• add tests and handling for deleted users #953 👈 (View in Graphite)
• add soft delete for users and permissions #952
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[datadog-opengovsg]

Datadog Report

Branch report: 12-20-add_tests_for_soft_delete
Commit report: dba4fc4
Test service: isomer-studio

✅ 0 Failed, 261 Passed, 36 Skipped, 47.03s Total Time
➡️ Test Sessions change in coverage: 1 no change

[linear]

ISOM-1701 Enable soft deletes for user management