Fix the missing repo count in new team page and edit team page (#27743)

Follow #26942
Before:

![image](https://github.com/go-gitea/gitea/assets/8389962/ffe3e914-c71c-493f-965b-369f27c70b4b)


![image](https://github.com/go-gitea/gitea/assets/8389962/eaad4f07-b8ce-4564-b883-97938de5ed79)

After:


![image](https://github.com/go-gitea/gitea/assets/8389962/353aeabe-caf4-4449-8330-d3a29f9bd326)


![image](https://github.com/go-gitea/gitea/assets/8389962/baf59bb6-2c74-4a56-a28c-1519bc3d2594)

routers/web/org/teams.go

@@ -276,6 +276,10 @@ func NewTeam(ctx *context.Context) {
 	ctx.Data["PageIsOrgTeamsNew"] = true
 	ctx.Data["Team"] = &org_model.Team{}
 	ctx.Data["Units"] = unit_model.Units
+	if err := shared_user.LoadHeaderCount(ctx); err != nil {
+		ctx.ServerError("LoadHeaderCount", err)
+		return
+	}
 	ctx.HTML(http.StatusOK, tplTeamNew)
 }
 
@@ -463,6 +467,10 @@ func EditTeam(ctx *context.Context) {
 		ctx.ServerError("LoadUnits", err)
 		return
 	}
+	if err := shared_user.LoadHeaderCount(ctx); err != nil {
+		ctx.ServerError("LoadHeaderCount", err)
+		return
+	}
 	ctx.Data["Team"] = ctx.Org.Team
 	ctx.Data["Units"] = unit_model.Units
 	ctx.HTML(http.StatusOK, tplTeamNew)