Remove scale up animation for startActivity from RemoteViews

The scale up animation used by default for all startActivity calls coming from
RemoteViews overrides all custom animations set on the activity's theme. By
switching to ActivityOptions.makeBasic(), we allow custom animations on an
activity by activity basis.

This also fixes issues where activities would scale up from a click position in the
notification tray even after the notification tray collapses (which happens
concurrently with the startActivity call).

Test: visual inspection

BUG: 34235073
Change-Id: I922beee39d9fde9c00d41d07d8a8204421e7faa7