Revert "Adjust default transparency value"

This reverts commit 68ec6f6116ca46d66326d8d829c7b4a909371579.
Revert "SystemUI: fix default navigation bar transparency value"

This reverts commit 2c738761682cc784209e6aa620e77a71d5e7a2a7.
Revert "Revert default transparency fix"

This reverts commit f44319f37a014701a47192305fef1b7981f54ae4.