fix invite list to student view new group dialog
fix invite list to student view new group dialog

fixes CNVS-17561

test plan
- as a student, open the "+ Group" dialog
- ensure that a list of students to invite is shown

Change-Id: I1b4129c83c0b779988147268de09cd520f45397b
Reviewed-on: https://gerrit.instructure.com/45982
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Andrew Butterfield <c9c7a32d9a1e9779cfad12bed963960e7af36eac@instructure.com>
QA-Review: Steven Shepherd <e794458448443812fb2685675aab3bbd1a3891bc@instructure.com>
Product-Review: Joel Hough <4816dabf8db1bc6cac35b3a24cab2ff844b5b0c7@instructure.com>

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