AutoSize TextView (part 4) - autosize when layout changes

Whenever TextView#onMeasure(...) gets called make sure to
also autosize is enabled. Also fixes the available space
calculation by taking the drawables padding into consideration
too.

Bug: 32221168
Bug: 33573642
Test: attached in topic
Change-Id: I1a01454f3863e51afd7e16cfa27f544db6ca0783