SDLFocusableItemLocator should be stopped when transport disconnects

[NicoleYarroch]

Bug Report

The SDLFocusableItemLocator class should have a stop method that is called when the transport disconnects. The stop method should unregister the class from getting SDLDidUpdateProjectionView notifications. Otherwise the class will still try to send data unnecessarily.

Reproduction Steps

1. Connect video streaming SDL app supporting haptic spatial data to a module that supports haptic spatial data. Launch the SDL app on the HMI.
2. Disconnect the SDL app.

Expected Behavior

The SDLFocusableItemLocator should ignore all SDLDidUpdateProjectionView notifications once the transport has disconnected.

Observed Behavior

The SDLFocusableItemLocator still tries to send the haptic rect data to core.

OS & Version Information

• iOS Version: n/a
• SDL iOS Version: 6.5
• Testing Against: sdl_core + sdl_hmi