feat: highlight browser failures

[mark-wiemer]

PR Checklist

• [x] Addresses an existing open issue: fixes #792, works on #5129
• [x] That issue was marked as status: accepting prs
• [x] Steps in CONTRIBUTING.md were taken

Overview

• Change pass indicator to accessible color in light mode (dark green)
• As soon as a test fails, add a red fail indicator and color the "failures" text red
• As soon as all tests have a result, and none are failures, add a green pass indicator and color the "passes" text green
• Result indicators for the root suite are the same for the result indicators for individual tests
  • Except result indicator for root suite is only pass/fail, skip for root suite will show pass for simplicity (happy to change)