Revert "Remove an unused param from IMMS#showInputMethodPickerFromClient()"

This reverts commit 3efbbb5e.

Reason for revert: DroidMonitor-triggered revert due to breakage https://android-build.googleplex.com/builds/quarterdeck?branch=git_master&target=aosp_bramble-userdebug&lkgb=9245415&lkbb=9246274&fkbb=9245423, bug https://buganizer.corp.google.com/issues/256952514

Change-Id: I343828ad83d50436211004753f1b9ba1b13b60ca
Bug: 256952514