advapi32_winetest:service timeout test disabled because it takes too long

The original issue is fixed with the new NPFS – r63719 enables asynchronous I/O so starting a service now correctly times out.
However the timeout test takes two minutes to run (because it causes four 30-second timeouts), so it is left disabled unless winetest_interactive is set.

Original issue:
----------------------
Since r54315, the advapi32:service winetest hangs.

This isn't a regression, but caused by the test getting further than before.
A CreateService call with invalid parameters previously succeeded, causing following tests to fail because the service already existed.

The hang happens in StartService (called in the test by try_start_stop) after the following sequence (line 2161):

• service is created with valid ImagePath
• service is started
• service is stopped (but ROS fails to do so)
• ImagePath is changed to something invalid with ChangeServiceConfig
• service is started again -> hang

As I "broke" it, I'm working on fixing it.

... just so noone wastes any (more) time on this