[Bug 48597] wine uninstaller does not update list of installed apps after using the "Install" button

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48597

--- Comment #1 from Nikolay Sivov  ---
When installing applet simply executes whatever was selected in open dialog,
and does not wait for anything, nor does it update the list. Uninstalling is
blocking, and after process terminates list is always updated.

I'm not sure how important this is, i.e. how many people actually use this
dialog to install things. We could probably respond to registry change
notifications, or something like that, and unblock UI in both cases.