Lookup assignment on all LTI launches if given param
Lookup assignment on all LTI launches if given param

Test Plan:
 - Confirm that LTI launches are fully functional and clean

Change-Id: I611f1e1eda82d5d3e7fc10c6c04299f067493cb4
Reviewed-on: https://gerrit.instructure.com/79762
Tested-by: Jenkins
Reviewed-by: Nathan Mills <10b0771d20c18ad0d98c1d000665e443052b40b0@instructure.com>
QA-Review: August Thornton <9adc7a1161ddf32ff608de792a7e50179545f026@instructure.com>
Product-Review: Jason Sparks <542e620f0c6c3447ce6e2e8c83a97102b99f89c6@instructure.com>

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