Bug in handling an empty HA failure time

The issue was reported by @marcin during 1.12 sanity checks.

We introduced regression in the dashboard related to the showHAFailureTime:

The problem is we don't see services status beyond the first one that failed.

That's what I get in the console:

ERROR TypeError: n is null
    showHAFailureTime http://localhost:8080/main.76ff0b13e4fb0d4e.js:1
    Sfe http://localhost:8080/main.76ff0b13e4fb0d4e.js:1