Fix null requested_reviewer from API (#31773)

If the assign the pull request review to a team, it did not show the
members of the team in the "requested_reviewers" field, so the field was
null. As a solution, I added the team members to the array.

fix #31764

(cherry picked from commit 94cca8846e7d62c8a295d70c8199d706dfa60e5c)

models/issues/pull.go

@@ -163,6 +163,7 @@ type PullRequest struct {
 	Issue                      *Issue `xorm:"-"`
 	Index                      int64
 	RequestedReviewers         []*user_model.User `xorm:"-"`
+	RequestedReviewersTeams    []*org_model.Team  `xorm:"-"`
 	isRequestedReviewersLoaded bool               `xorm:"-"`
 
 	HeadRepoID          int64                  `xorm:"INDEX"`
@@ -303,7 +304,28 @@ func (pr *PullRequest) LoadRequestedReviewers(ctx context.Context) error {
 	}
 	pr.isRequestedReviewersLoaded = true
 	for _, review := range reviews {
-		pr.RequestedReviewers = append(pr.RequestedReviewers, review.Reviewer)
+		if review.ReviewerID != 0 {
+			pr.RequestedReviewers = append(pr.RequestedReviewers, review.Reviewer)
+		}
+	}
+
+	return nil
+}
+
+// LoadRequestedReviewersTeams loads the requested reviewers teams.
+func (pr *PullRequest) LoadRequestedReviewersTeams(ctx context.Context) error {
+	reviews, err := GetReviewsByIssueID(ctx, pr.Issue.ID)
+	if err != nil {
+		return err
+	}
+	if err = reviews.LoadReviewersTeams(ctx); err != nil {
+		return err
+	}
+
+	for _, review := range reviews {
+		if review.ReviewerTeamID != 0 {
+			pr.RequestedReviewersTeams = append(pr.RequestedReviewersTeams, review.ReviewerTeam)
+		}
 	}
 
 	return nil

models/issues/review_list.go

@@ -7,6 +7,7 @@ import (
 	"context"
 
 	"code.gitea.io/gitea/models/db"
+	organization_model "code.gitea.io/gitea/models/organization"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/container"
 	"code.gitea.io/gitea/modules/optional"
@@ -37,6 +38,34 @@ func (reviews ReviewList) LoadReviewers(ctx context.Context) error {
 	return nil
 }
 
+// LoadReviewersTeams loads reviewers teams
+func (reviews ReviewList) LoadReviewersTeams(ctx context.Context) error {
+	reviewersTeamsIDs := make([]int64, 0)
+	for _, review := range reviews {
+		if review.ReviewerTeamID != 0 {
+			reviewersTeamsIDs = append(reviewersTeamsIDs, review.ReviewerTeamID)
+		}
+	}
+
+	teamsMap := make(map[int64]*organization_model.Team, 0)
+	for _, teamID := range reviewersTeamsIDs {
+		team, err := organization_model.GetTeamByID(ctx, teamID)
+		if err != nil {
+			return err
+		}
+
+		teamsMap[teamID] = team
+	}
+
+	for _, review := range reviews {
+		if review.ReviewerTeamID != 0 {
+			review.ReviewerTeam = teamsMap[review.ReviewerTeamID]
+		}
+	}
+
+	return nil
+}
+
 func (reviews ReviewList) LoadIssues(ctx context.Context) error {
 	issueIDs := container.FilterSlice(reviews, func(review *Review) (int64, bool) {
 		return review.IssueID, true