GitLab

Backport #15749

* Drop back to use IsAnInteractiveSession for SVC

There is an apparent permission change problem when using
IsWindowsService to determine if the SVC manager should be
used.

This PR simply drops back to using IsAnInteractiveSession as
this does not change behaviour.

Fix #15454
Signed-off-by: Andrew Thornton <art27@cantab.net>

* Yes staticcheck I know this is deprecated
Signed-off-by: Andrew Thornton <art27@cantab.net>

* Just leave me alone lint
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>