updateSoftInputMode

Sets the soft input mode for this SearchView. This is important because the will use this to determine whether the keyboard should be shown/hidden at the same time as the expand/collapse animation, or if the keyboard should be staggered with the animation to avoid glitchiness due to a resize of the screen. This will be set automatically by the SearchView during initial render but make sure to invoke this if you are changing the soft input mode at runtime.