Ensure isTablet is only enable when simulated landscape is disabled

- Tablet UI (e.g. grid overview and two panel workspace) is built with assumption that simulated landscape is disabled, make sure this is the case in DeviceProfile
- This is usually true as swDPs is generally smaller than sw used to determine xml files

Bug: 174464656
Test: Try different combination of smallest width and Display Size, isTablet is only set when allow_rotation is true
Change-Id: I3ee1c76909f29b6f14c4032be812bb8c9ea7e827