allow RCE flag to be engaged on prod
allow RCE flag to be engaged on prod

fixes CNVS-28027

TEST PLAN:
 1) should be able to enable this flag on prod

Change-Id: Ie03d937d225cc77fcc08ae20c63289f95e45eb89
Reviewed-on: https://gerrit.instructure.com/74457
Reviewed-by: Simon Williams <088e16a1019277b15d58faf0541e11910eb756f6@instructure.com>
Tested-by: Jenkins
Product-Review: Ethan Vizitei <73eeb0b2f65d05a906adf3b21ee1f9f5a2aa3c1c@instructure.com>
QA-Review: Ethan Vizitei <73eeb0b2f65d05a906adf3b21ee1f9f5a2aa3c1c@instructure.com>

djbender/canvas-lms,HotChalk/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,roxolan/canvas-lms,SwinburneOnline/canvas-lms,roxolan/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,SwinburneOnline/canvas-lms,grahamb/canvas-lms,fronteerio/canvas-lms,SwinburneOnline/canvas-lms,sfu/canvas-lms,HotChalk/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,fronteerio/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,HotChalk/canvas-lms,fronteerio/canvas-lms,fronteerio/canvas-lms,sfu/canvas-lms,roxolan/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,roxolan/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,HotChalk/canvas-lms,grahamb/canvas-lms,SwinburneOnline/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms