[TIMOB-18139] Redisplay the alert controller

Normally we do not allow ant window to be presented above an alert.
TiErrorController is the exception. In that case we just redisplay the
alert to position it correctly
Merge pull request #6454 from vishalduggal/timob-18139-35X

[TIMOB-18139] (3_5_X) Redisplay the alert controller