feat(windows): condition to go from downloading to waitingrestart changed for keyman update state machine

[rc-swag]

Background:
Because elevated permissions are needed there was pop-up to let the user know that install was about to start so that the elevated permission question was not seen as suspicious. This was in the state machine module. The UI pop-up was decoupled and placed into the main start-up code of all of kmshell. This is working well for most scenarios there is still cases where the state machine will just advance through all states and start installing and the user first nows about it via kmshell permissions popup. The proposal for now is to always have go from downloading to waitingrestart state unless the apply now flag is set.

Example
Keyman has not run. Keyman Configuration is opened, background update kicks off and finds a download, downloads it checks if keyman as run, it hasn't so it starts the install without notifying the user. With the proposed solution it would go to WaitingRestart. So the next time kmshell is run for configuration, keyman etc the install pop-up can request permssion from the user.
In stage 2 we can improve this.