fix: flaky case_contact index

[elasticspoon]

Potentially unflakes the test.

  1) case_contacts/index with case contacts without filter displays the contact type groups
     Failure/Error: expect(page).to have_text(case_contacts[2].contact_groups_with_types.keys.first)
       expected to find text "Group 1388" in "Group 1389\nDraft"

My theory is that sometimes the draft would appear before the real test because both were using Time.zone.today for the time. Looking at what the test is asserting more closely it doesn't actually make sense to check the first contact type group. All that matters is the overall presence of the group on the page.

I hardcoded more values to improve consistency.