use scoped.new when checking permission on discussion topic
use scoped.new when checking permission on discussion topic

refs #CNVS-19284

Change-Id: I7fd4df84533f4b010f5250780ea3f8085bdfeb55
Reviewed-on: https://gerrit.instructure.com/50445
Reviewed-by: Jeremy Stanley <b3f594e10a9edcf5413cf1190121d45078c62290@instructure.com>
Product-Review: Jeremy Stanley <b3f594e10a9edcf5413cf1190121d45078c62290@instructure.com>
Tested-by: Jenkins
QA-Review: Clare Strong <40d6bb3ed7fef516c73274131d5a837c16de74fd@instructure.com>

va7map/canvas-lms,redconfetti/canvas-lms,Rvor/canvas-lms,kyroskoh/canvas-lms,ShreniiNepal/shrenii_lmp,sfu/canvas-lms,fronteerio/canvas-lms,venturehive/canvas-lms,skmezanul/canvas-lms,grahamb/canvas-lms,SwinburneOnline/canvas-lms,greyhwndz/canvas-lms,fronteerio/canvas-lms,fronteerio/canvas-lms,SwinburneOnline/canvas-lms,whalejasmine/canvas-lms,samuels410/greatlakes-lms,kyroskoh/canvas-lms,shidao-fm/canvas-lms,Jyaasa/canvas-lms,sdeleon28/canvas-lms,grahamb/canvas-lms,utkarshx/canvas-lms,wrdsb/canvas-lms,efrj/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,roxolan/canvas-lms,HotChalk/canvas-lms,greyhwndz/canvas-lms,HotChalk/canvas-lms,roxolan/canvas-lms,utkarshx/canvas-lms,wrdsb/canvas-lms,jay3126/canvas-lms,djbender/canvas-lms,juoni/canvas-lms,juoni/canvas-lms,leftplusrightllc/canvas-lms,jay3126/canvas-lms,redconfetti/canvas-lms,antoniuslin/canvas-lms,sdeleon28/canvas-lms,whalejasmine/canvas-lms,tgroshon/canvas-lms,tgroshon/canvas-lms,redconfetti/canvas-lms,efrj/canvas-lms,ShreniiNepal/shrenii_lmp,sdeleon28/canvas-lms,wrdsb/canvas-lms,sfu/canvas-lms,greyhwndz/canvas-lms,efrj/canvas-lms,skmezanul/canvas-lms,samuels410/greatlakes-lms,roxolan/canvas-lms,shidao-fm/canvas-lms,sfu/canvas-lms,shidao-fm/canvas-lms,fronteerio/canvas-lms,greyhwndz/canvas-lms,va7map/canvas-lms,ShreniiNepal/shrenii_lmp,sfu/canvas-lms,Rvor/canvas-lms,kyroskoh/canvas-lms,skmezanul/canvas-lms,efrj/canvas-lms,juoni/canvas-lms,Rvor/canvas-lms,venturehive/canvas-lms,leftplusrightllc/canvas-lms,tgroshon/canvas-lms,jay3126/canvas-lms,va7map/canvas-lms,djbender/canvas-lms,antoniuslin/canvas-lms,grahamb/canvas-lms,va7map/canvas-lms,skmezanul/canvas-lms,Jyaasa/canvas-lms,grahamb/canvas-lms,grahamb/canvas-lms,antoniuslin/canvas-lms,utkarshx/canvas-lms,juoni/canvas-lms,wrdsb/canvas-lms,samuels410/greatlakes-lms,sdeleon28/canvas-lms,tgroshon/canvas-lms,Rvor/canvas-lms,SwinburneOnline/canvas-lms,redconfetti/canvas-lms,HotChalk/canvas-lms,whalejasmine/canvas-lms,djbender/canvas-lms,HotChalk/canvas-lms,antoniuslin/canvas-lms,sfu/canvas-lms,ShreniiNepal/shrenii_lmp,SwinburneOnline/canvas-lms,samuels410/greatlakes-lms,jay3126/canvas-lms,djbender/canvas-lms,leftplusrightllc/canvas-lms,roxolan/canvas-lms,sfu/canvas-lms,shidao-fm/canvas-lms,kyroskoh/canvas-lms,whalejasmine/canvas-lms,utkarshx/canvas-lms,leftplusrightllc/canvas-lms,Jyaasa/canvas-lms,Jyaasa/canvas-lms