Update config when "Show input method" is changed

This is a follow up CL for I2237ded850a0d4ab43ca441d0b7df1.

Seems that we still need to update config settings every
time when "Show input method" is changed.

BUG: 17666032
Change-Id: I480aeaa038bef9c3c20e8f0b36110e92a35809db
1 file changed