Fix beta update check

[dnicolson]

♻️ Current situation

This fixes the following error when updating beta versions:
"Failed to check for bundled update as Request failed with status code 404"

It's unclear if alpha, next, or test need to be inlcuded.

💡 Proposed solution

Prevent 404 errors when looking for a beta release instead of a tagged release.

This also reverts the logging change in c81fddd to improve grammar.

[bwp91]

We should include alpha too as sometimes an alpha version is published of the UI 👍

[bwp91]

Thanks!