Dispatch correct position on update in DisplayImeController

With the changes in [1], we don't rely on the initially set position, but use the current surface position of the control. However, we didn't dispatch the adjusted position to the listeners.
This CL also fixes the seekValue when an ongoing animation was cancelled (show -> hide; hide -> show).

[1]: Ia3acf63e2a2ec7518ba5587ca44c5cede72574d4

Fix: 421000153
Test: Hide IME in lower app in split screen
Flag: EXEMPT Bugfix
Change-Id: I2709d128530dd7ae6372df3570197ed65da1f605