[services] [electron update server] Patch hazel to work with desktop-vX.Y.Z tags

Summary:
Because we have both mobile and desktop releases in our github repo we need to add a small change to the Hazel electron update server so that it only looks for releases that have a git tag that looks like desktop-vX.Y.Z.

Depends on D6353

Test Plan: Check if hazel correctly looks for desktop-vX.Y.Z git tags and ignores other tags.

Reviewers: atul, tomek, jon, ashoat

Reviewed By: ashoat

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D6354