In #1150 we have implemented an aggregate status check (#959) for digger digger/plan and digger/apply. Although those are set correctly there is an additional mergability check which causes digger apply step to fail IF the PR is not mergable.

This has introduced chicken-egg situation where you want digger/apply check to succeed for PR to be mergable but digger/apply needs to complete

We should do an additional check on mergability where if PR state is "blocked" and the only check blocking it is "digger/apply" then to still proceed with the apply