Do not include SoundPicker on Android TV

This CL leverages the PRODUCT_IS_ATV build time variable to selectively
exclude the SoundPicker package from the PRODUCT_PACKAGES. This also
paves the way to approach the removal of other unused packages from TV.

Bug: 276897441
Test: make
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:413b614d0d7bc1b412c87672f995fabfadbb6bc8)
Merged-In: Ifb25c1f26df545d31fb80f8e43c217fa8806e021
Change-Id: Ifb25c1f26df545d31fb80f8e43c217fa8806e021