fix: PR not blocked by review request for a whitelisted team (#8511)

Fixes #8491.

Previous behavior always updated the newly created review to set the `official` flag to false.  This logic is now removed.

The most likely reason that this logic existed was that team reviews were being marked as official based upon `doer`, rather than the target team, which seems undesirable.  The expected behavior was retained by removing the check for `IsOfficialReviewer(..., doer)`, ensuring that when making a review request for a team, it doesn't matter *who* makes the request.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8511
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: Mathieu Fenniak <mathieu@fenniak.net>
Co-committed-by: Mathieu Fenniak <mathieu@fenniak.net>

models/fixtures/TestAddTeamReviewRequest/pull_request.yml

@@ -0,0 +1,12 @@
+-
+  id: 11
+  type: 0 # gitea pull request
+  status: 2 # mergeable
+  issue_id: 23
+  index: 3
+  head_repo_id: 2
+  base_repo_id: 2
+  head_branch: feature/protected-branch-pr
+  base_branch: protected-main
+  merge_base: 4a357436d925b5c974181ff12a994538ddc5a269
+  has_merged: false