New info message with lineageos reference on update

• /e/ version: e-0.23-r-20220319171751-stable-FP4
• Device model(s): FP4
• Device rooted: no

Summary

After accepting the download process for a new OS update, an info message with Lineageos ref is displayed.

Technical informations

Seen on r, not on pie. Could be also present on q.

Relevant screenshots

cc @rhunault