[native] Fix for encrypted media
Summary:
Context can be found here: https://linear.app/comm/issue/ENG-6850/build-316-cant-load-encrypted-images
Just removing getAuthMetadata call for now and passing undefined to fetchAndDecryptMedia.
NOTE: I know that I could further "simplify" useFetchAndDecryptMedia by removing the useContext, removing the outer function, etc. but I want to keep the API the same so @bartek or whoever in the future can drop getAuthMetadata back in.
Test Plan:
Able to view encrypted images again:
Set breakpoints through fetchAndDecryptMedia and ensured that things worked as expected without auth metadata.
Reviewers: ashoat, ginsu, tomek, bartek
Reviewed By: ashoat
Subscribers: bartek
Differential Revision: https://phab.comm.dev/D11136