Apply cache and preload mechanism to inline image notifications.

Inline image will consume 3x memory due to no cache implementation.
This patch apply cache mechanism to each ExpandableNotificationRow and
preloads images before inflation task.

Bug: 77956056
Test: runtest systemui, observe memory usage by AndroidProfiler
Change-Id: I2c488b1d98ddf2d4670904ed4b3e8028c0d0172e