Continue to decrypt other application keys if one fails to decrypt

An exception will still be thrown if all the application keys fail to
decrypt.

Test: adb shell am instrument -w -e package \
com.android.server.locksettings.recoverablekeystore \
com.android.frameworks.servicestests/android.support.test.runner.AndroidJUnitRunner
Bug: 72932279
Change-Id: I95befcd46672b77380226e61369759de5617ecea