Fix org team assignee/reviewer lookups for team member permissions (#37365) (#37391)

Backport #37365 by @pisarz77

Fix team members missing from assignee list when `team_unit.access_mode`
is 0 but the doer is owner.

Fix  #34871

1. Use `GetTeamUserIDsWithAccessToAnyRepoUnit` for repo assignee list
2. Load assignee list for project issues directly
3. Use `GetTeamUserIDsWithAccessToAnyRepoUnit` for repo reviewer list

Signed-off-by: Jakub Pisarczyk <pisarz77@gmail.com>
Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: pisarz77 <pisarz77@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Claude (Opus 4.7) <noreply@anthropic.com>

routers/web/org/projects.go

@@ -11,7 +11,6 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	issues_model "code.gitea.io/gitea/models/issues"
-	org_model "code.gitea.io/gitea/models/organization"
 	project_model "code.gitea.io/gitea/models/project"
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unit"
@@ -459,9 +458,9 @@ func ViewProject(ctx *context.Context) {
 	ctx.Data["MilestoneID"] = milestoneID
 
 	// Get assignees.
-	assigneeUsers, err := org_model.GetOrgAssignees(ctx, project.OwnerID)
+	assigneeUsers, err := project_service.LoadIssuesAssigneesForProject(ctx, issuesMap)
 	if err != nil {
-		ctx.ServerError("GetRepoAssignees", err)
+		ctx.ServerError("LoadIssuesAssigneesForProject", err)
 		return
 	}
 	ctx.Data["Assignees"] = shared_user.MakeSelfOnTop(ctx.Doer, assigneeUsers)