E2E: harden against loading screen.

[Mpdreamz]

Microsoft.Playwright.PlaywrightException : Error: strict mode violation: GetByRole(AriaRole.Heading, new() { Name = "Services" }) resolved to 2 elements:
    1) <h1 class="euiTitle css-nei9rn-euiTitle-l">…</h1> aka GetByRole(AriaRole.Heading, new() { Name = "Services Tell us what you" })
    2) <h2 class="euiTitle css-smz32e-euiTitle-m">Loading services</h2> aka GetByRole(AriaRole.Heading, new() { Name = "Loading services" })

The current wait for can resolve to two items now.