fix display after unfavoriting on course list
fix display after unfavoriting on course list

test plan:
* unfavoriting a course on the course list should remove the star

closes #CNVS-36184

Change-Id: I4303d8a2b93784efeaa63d3b3edc07fbcd660578
Reviewed-on: https://gerrit.instructure.com/108008
Tested-by: Jenkins
Reviewed-by: Ryan Shaw <ea3cd978650417470535f3a4725b6b5042a6ab59@instructure.com>
QA-Review: Deepeeca Soundarrajan <5bcd4b623f00b7fc2942cd1c65c245b30a48a61f@instructure.com>
Product-Review: James Williams  <3a5f4ed991dbfa5c9ef76ad729d240ca12f62180@instructure.com>

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