Tweak duration of bars fade animation for orientation change

The default fade_out uses config_longAnimTime=500.
The default fade_in uses config_mediumAnimTime=400.
Which are too long for app switch transition.
If the app transition finishes earlier, the bar may show its
content with new orientation on old side.

Programmatic animation creation is also 10 times faster than
creating from resources.

Bug: 364551522
Flag: EXEMPT bugfix
Test: Swipe landscape pip-able app to portrait home.
Change-Id: I310d2c855e6b6c9844b120f74dbd55c370f9ba09