feat: add dependency health checks and table pagination with row virtualization

[blurbeast]

closes #513
closes #510

Description

This PR introduces two primary enhancements to improve user performance when browsing large datasets and enhance backend service observability:                   
                                                                                                                                                                  
1. **Table Pagination & DOM Virtualization (Corporate Platform Web & Backend)**                                                                                   
   - Implemented a reusable `<Pagination />` component and `usePagination` hook with configurable page sizes (`10`, `20`, `50`, `100`), jump controls, and        

accessibility (ARIA) attributes.
- Integrated @tanstack/react-virtual for virtualized rendering of large table record sets across:
- Portfolio Holdings (/portfolio)
- Audit Trail Viewer (AuditTrailViewer)
- IPFS Document Manager (IpfsManager)
- Extended CorporateContext to manage paginated portfolio holdings.
- Added page and limit query parameters with Prisma skip/take pagination to UploadService.listDocuments and IpfsController.listDocuments in
corporate-platform-backend.

2. **Active Dependency Health Checks (Project Portal Backend)**                                                                                                   
   - Upgraded the `/health` endpoint from a static JSON response to an active dependency probe handler.                                                           
   - Probes PostgreSQL, Elasticsearch, and MongoDB concurrently with bounded timeouts (`probeTimeout = 2s`).                                                      
   - Returns `200 OK` with dependency statuses when all configured services are healthy, and `503 Service Unavailable` when any dependency fails or is unreachable.
   - Updated `pkg/elastic/client.go` to support context propagation.   

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[Oluwaseyi89]

@blurbeast go and add a descriptive message to your PR. I will not merge until then.

[blurbeast]

@Oluwaseyi89 kindly review boss