chore: add e2e tests for database info

[astandrik]

Closes #1775

CI Results

Test Status: ⚠️ FLAKY

📊 Full Report

Total	Passed	Failed	Flaky	Skipped
232	231	0	1	0

Test Changes Summary ✨5

✨ New Tests (5)

1. Info tab shows main page elements (tenant/diagnostics/diagnostics.test.ts)
2. Info tab shows resource utilization (tenant/diagnostics/diagnostics.test.ts)
3. Info tab shows healthcheck status (tenant/diagnostics/diagnostics.test.ts)
4. Storage tab shows Groups and Nodes views (tenant/diagnostics/diagnostics.test.ts)
5. Nodes tab shows nodes table with memory viewer (tenant/diagnostics/diagnostics.test.ts)

Bundle Size: ✅

Current: 66.16 MB | Main: 66.16 MB
Diff: 0.00 KB (0.00%)

✅ Bundle size unchanged.

ℹ️ CI Information

• Test recordings for failed tests are available in the full report.
• Bundle size is measured for the entire 'dist' directory.
• 📊 indicates links to detailed reports.
• 🔺 indicates increase, 🔽 decrease, and ✅ no change in bundle size.

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (1)

tests/suites/paginatedTable/paginatedTable.ts:249

• [nitpick] The class name 'DiagnosticsNodesTable' is inconsistent with the naming convention used in the file. It should be renamed to 'PaginatedDiagnosticsNodesTable'.

export class DiagnosticsNodesTable extends PaginatedTable {