[pm] ignore old value of abiOverride in pkgSetting when installing

This reverts a change introduced in ag/10220453, and the correct behavior here should be to use the abiOverride value passed from args.

Test: manual (will add CTS tests)
BUG: 163888243
BUG: 162298405
Change-Id: I93c85b5b8fe94726e450dc467f2cd5aecaa376f9