Fix dashboard link state test expectation

[brothercorvo]

Motivation

• A UI test was failing because getByText('connected') matched multiple elements causing a multiple-match error.
• The intent is to make the test robust by explicitly asserting the expected number of occurrences of the connected text.

Description

• Updated the dashboard test assertion from expect(screen.getByText('connected')).toBeInTheDocument() to expect(screen.getAllByText('connected')).toHaveLength(2) to account for both occurrences.
• Committed the change to examples/EmergencyManagement/webui/src/pages/__tests__/DashboardPage.test.tsx.

Testing

• Attempted to run npm test in examples/EmergencyManagement/webui, but the run failed with vitest: not found so the test suite could not be executed in this environment.
• No other automated tests were run as part of this change.

---

Codex Task