NvDA/AppX: do not present 'restart with add-ons disabled' in exit dialog as this edition does not support add-ons yet (#8382)
* appx/manifest/tested version: 10.0.17134.0 (April 2018 Update)
* NvDA/AppX: do not present 'restart with add-ons diabled' as this edition does not support add-ons yet.
Possible oversight: because Windows Store version of NVDA does not support add-ons yet, do not present disable add-ons option in exit dialog. Also, if action is set to 2 (normally disable add-ons), add 1 so it can point to restarting with debug logging instead.