KDE window rule to prevent Origin launcher in steam proton/wine to steal the focus if notifications pop up like achievements, chat message or opening the overlay itself. To import it select window rules in KDE, click import and then import the file below.

Origin-focus steal.kwinrule

[Origin no minimize (low enough for notification but still allows dialogs (e.g. close dialog))]
Description=Origin no minimize (low enough for notification but still allows dialogs (e.g. close dialog))
fsplevel=1
fsplevelrule=2
skipswitcher=true
skipswitcherrule=2
title=Origin
titlematch=1
types=1
wmclass=steam_(proton|app_[0-9])
wmclasscomplete=true
wmclassmatch=3