FP4: Use FUSE passthrough by default

Enable the persist.sys.fuse.passthrough.enable flag for the device
configuration to enable the FUSE passthrough feature.
This feature has been enabled on Cuttlefish, Wembley and Redbull devices for
months and no issues have been detected yet.

Bug: 168023149
Test: 'adb shell getprop | grep persist.sys.fuse.passthrough.enable',
    ScopedStorageTest
Signed-off-by: Alessio Balsini <balsini@google.com>
Change-Id: I3f39b02af436f7e508bb70efc702565a667a051c