feat: wire Jira integration UI

[yashrastogi]

Closes Sentinent-AI/Sentinent#29.

Changes

• Add typed Jira project integration response handling.
• Show connected Jira projects in workspace integration settings.
• Normalize Jira signal metadata for project, issue type, issue key, and assignee display.
• Update workspace integration tests for the Jira project response shape.
• Switch Jira connection to direct redirect to bypass browser popup blockers.
• Improve workspace ID retrieval to correctly handle child route parameters.
• Handle OAuth callback parameters to show success/failure feedback in the UI.
• Fix unit tests by correctly mocking queryParamMap in ActivatedRoute.

Tests

• npm test -- --watch=false --browsers=ChromeHeadless