Follow-up for GitLab Duo Health Check - Resolve failed injections

The following discussion from !163064 (merged) should be addressed:

• @rcrespo3 started a discussion: (+3 comments)

  issue (non-blocking): Doesn't appear to be related to this MR, but there are several non-existent injection warnings being thrown upon mounting:

  

  ITK? If not, WDYT about creating a follow up to give these injection keys default values?

Proposal

May be worth investigating why these are undefined, but simple fix is to give the injections default values