don't inline assignments quizzes 2 tool tag subqueries
don't inline assignments quizzes 2 tool tag subqueries

should improve the speed since the vast majority of assignments
are not associated with quizzes 2

also fix the scope to always generate on the relation shard

test plan:
* specs run

closes #LS-1277

Change-Id: Ia16fc4e43222251d1eea4df459ca4fd87f5b08ca
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/244318
Reviewed-by: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>
QA-Review: James Williams <3a5f4ed991dbfa5c9ef76ad729d240ca12f62180@instructure.com>
Product-Review: James Williams <3a5f4ed991dbfa5c9ef76ad729d240ca12f62180@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms