DA - GB dont set default grade when hidden
DA - GB dont set default grade when hidden

fixes CNVS-17109

test plan:
  - make a student only able to see an assignment
    because they have a graded submission
  - take the submission away in GB and notice
    that the cell goes gray
  - without reloading the page, set a default grade
    on that assignment
  - the newly greyed out student should
    not get a grade

Change-Id: I93641a009b3616065a96e6c99c93f907ea4bcca1
Reviewed-on: https://gerrit.instructure.com/44923
Reviewed-by: Matt Berns <e53c8988cd428dde240324ce2797c8eb7073560f@instructure.com>
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
QA-Review: Adam Stone <a0b2b61e2edcf99aa16080c2254a6ae6923d1fac@instructure.com>
Product-Review: Hilary Scharton <b55b20a171673afabe1f3f421d6770a86afaa815@instructure.com>

roxolan/canvas-lms,whalejasmine/canvas-lms,dgynn/canvas-lms,matematikk-mooc/canvas-lms,AndranikMarkosyan/lms,HotChalk/canvas-lms,snehakachroo1/LSI_replica,redconfetti/canvas-lms,leftplusrightllc/canvas-lms,juoni/canvas-lms,efrj/canvas-lms,tgroshon/canvas-lms,venturehive/canvas-lms,instructure/canvas-lms,narigone/canvas,grahamb/canvas-lms,leftplusrightllc/canvas-lms,wrdsb/canvas-lms,narigone/canvas,snehakachroo1/LSI_replica,Rvor/canvas-lms,SwinburneOnline/canvas-lms,instructure/canvas-lms,greyhwndz/canvas-lms,jay3126/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,whalejasmine/canvas-lms,wrdsb/canvas-lms,samuels410/greatlakes-lms,narigone/canvas,sfu/canvas-lms,va7map/canvas-lms,Rvor/canvas-lms,venturehive/canvas-lms,roxolan/canvas-lms,dgynn/canvas-lms,fronteerio/canvas-lms,samuels410/greatlakes-lms,sfu/canvas-lms,kyroskoh/canvas-lms,Jyaasa/canvas-lms,redconfetti/canvas-lms,tgroshon/canvas-lms,samuels410/greatlakes-lms,djbender/canvas-lms,utkarshx/canvas-lms,HotChalk/canvas-lms,antoniuslin/canvas-lms,wrdsb/canvas-lms,venturehive/canvas-lms,jay3126/canvas-lms,instructure/canvas-lms,antoniuslin/canvas-lms,sdeleon28/canvas-lms,eCNAP/CANVAS,dgynn/canvas-lms,greyhwndz/canvas-lms,utkarshx/canvas-lms,sdeleon28/canvas-lms,jay3126/canvas-lms,utkarshx/canvas-lms,juoni/canvas-lms,dgynn/canvas-lms,tgroshon/canvas-lms,matematikk-mooc/canvas-lms,jay3126/canvas-lms,skmezanul/canvas-lms,venturehive/canvas-lms,ShreniiNepal/shrenii_lmp,matematikk-mooc/canvas-lms,roxolan/canvas-lms,juoni/canvas-lms,ShreniiNepal/shrenii_lmp,eCNAP/CANVAS,shidao-fm/canvas-lms,Rvor/canvas-lms,sfu/canvas-lms,va7map/canvas-lms,va7map/canvas-lms,HotChalk/canvas-lms,sdeleon28/canvas-lms,tgroshon/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms,va7map/canvas-lms,Rvor/canvas-lms,redconfetti/canvas-lms,snehakachroo1/LSI_replica,snehakachroo1/LSI_replica,eCNAP/CANVAS,grahamb/canvas-lms,roxolan/canvas-lms,eCNAP/CANVAS,greyhwndz/canvas-lms,efrj/canvas-lms,ShreniiNepal/shrenii_lmp,AndranikMarkosyan/lms,skmezanul/canvas-lms,SwinburneOnline/canvas-lms,djbender/canvas-lms,shidao-fm/canvas-lms,fronteerio/canvas-lms,sfu/canvas-lms,sdeleon28/canvas-lms,efrj/canvas-lms,skmezanul/canvas-lms,antoniuslin/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,AndranikMarkosyan/lms,narigone/canvas,ShreniiNepal/shrenii_lmp,redconfetti/canvas-lms,leftplusrightllc/canvas-lms,Jyaasa/canvas-lms,kyroskoh/canvas-lms,fronteerio/canvas-lms,Jyaasa/canvas-lms,whalejasmine/canvas-lms,sfu/canvas-lms,whalejasmine/canvas-lms,leftplusrightllc/canvas-lms,AndranikMarkosyan/lms,samuels410/greatlakes-lms,SwinburneOnline/canvas-lms,instructure/canvas-lms,utkarshx/canvas-lms,greyhwndz/canvas-lms,djbender/canvas-lms,efrj/canvas-lms,fronteerio/canvas-lms,Jyaasa/canvas-lms,grahamb/canvas-lms,matematikk-mooc/canvas-lms,skmezanul/canvas-lms,kyroskoh/canvas-lms,kyroskoh/canvas-lms,antoniuslin/canvas-lms,grahamb/canvas-lms,juoni/canvas-lms,HotChalk/canvas-lms,shidao-fm/canvas-lms,shidao-fm/canvas-lms,SwinburneOnline/canvas-lms,wrdsb/canvas-lms