Fix icon flicker on transition from installing, to installed, to downloading incrementally.

When an app finished downloading, we assumed that its progress level was 100%. This caused flicker in apps that supported incremental downloads. Added a check for the total download progress on app installation.

demo: https://drive.google.com/file/d/11NwwhHj_4rmDFwpsb8gTX-uA5YSinjSj/view?usp=sharing

Fixes: 178745816

Test: manual

Change-Id: I08328296db2ce2c2242fc4fe87158ff4b911c659