Fix UI problems of PublicVolumeSettings

This change replaces StorageSummaryPreference with
UsageProgressBarPreference.

Bug: 215325625
Test: manual visual
      1. Disable 'Files by Google'
      2. Settings -> Storage -> select SD card -> Files
      3. Option menu -> Storage Settings
Change-Id: I5db8c5971429ccd444d6d898b1df2c09363455b0