Generate SDKs task status error

`Generate SDK` task should not be marked as `Task completed` until all PRs are in `merged` state.
See this image from PROD:

Start by locating the Generate SDK task implementation and the code that determines its status. Trace how the states of all associated PRs are evaluated, then verify that the task is reported as completed only when every PR is merged. No specific files or tests are named in the issue, so identify the relevant test coverage before making a change.

Written by the indexing model from the issue text.