It makes more sense to process events until the incubator is Ready
rather than while it's already Ready.

Change-Id: If8b0c5057dd88ffdbb2dd39f53b5b9676d0b9d19
Reviewed-by: Paolo Angelelli <paolo.angelelli@theqtcompany.com>
Reviewed-by: Matthew Vogt <matthew.vogt@qinetic.com.au>