AboutDialog: Fix compilation with ENABLE_SDL=OFF

InputCommon: return the device list directly in GetAllDevices

Loading custom textures using combination of elf/dol game ids and iso game ids.

We were registering the hotplug callback when starting the thread, but
deregistering it when shutting down GCAdapter as a whole. Because the
thread can start and stop potentially many times before GCAdapter shuts
down, this led to callbacks being registered when we already have
callbacks. On Android, this was making Dolphin's Kotlin code for
registering the callback throw an IllegalStateException.

To fix this, deregister the callback when stopping the thread.

This fixes https://bugs.dolphin-emu.org/issues/14076. The issue report
more or less already says it all, but to provide a shorter summary:
We were fetching a list of vibrator IDs, but instead of passing the
vibrator ID to the vibrator manager, we passed the index of the ID in
the list. This happened to work fine on many devices, including all
devices that use DolphinVibratorManagerCompat, due to the only Vibrator
having both an index and ID of 0. But on some devices, it failed due to
the ID of the Vibrator being 1.

This fix makes us correctly pass the ID to the vibrator manager. We
still use indices in controller INI files, both for compatibility with
the controller mappings shipped with Dolphin (which use index 0) and for
backwards compatibility with older controller INI files.