Ic005b94379f9d847ea, which introduced DynamicRotationList for
smarter input method rotation, is suspected to be causing a
strange behavior that InputMethodManager#switchToNextInputMethod
is choosing unexected/disabled IME/subtype.
With this CL, we switch back to StaticRotationList until the root
cause is addressed.
BUG: 7043015
Change-Id: I95fc8b28536cea6d09ea325e0caee14007cfc0a7