GameManagerService: Prevent multiple threads from accessing settings observer onChange

* this could lead to potential increase of cpu usage in system_server

Signed-off-by: minaripenguin <minaripenguin@users.noreply.github.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: Jackeagle <jackeagle102@gmail.com>
1 file changed