Used limited reader in user invite (#25943)

* Used limited reader in user invite

* Added tests

server/channels/api4/team.go

@@ -1375,16 +1375,12 @@ func inviteUsersToTeam(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	bf, err := io.ReadAll(r.Body)
+	memberInvite := &model.MemberInvite{}
+	err := model.StructFromJSONLimited(r.Body, *c.App.Config().ServiceSettings.MaximumPayloadSizeBytes, memberInvite)
 	if err != nil {
 		c.Err = model.NewAppError("Api4.inviteUsersToTeams", "api.team.invite_members_to_team_and_channels.invalid_body.app_error", nil, "", http.StatusBadRequest).Wrap(err)
 		return
 	}
-	memberInvite := &model.MemberInvite{}
-	if err := json.Unmarshal(bf, memberInvite); err != nil {
-		c.Err = model.NewAppError("Api4.inviteUsersToTeams", "api.team.invite_members_to_team_and_channels.invalid_body_parsing.app_error", nil, "", http.StatusBadRequest).Wrap(err)
-		return
-	}
 
 	emailList := memberInvite.Emails