Account for compat scaling in NoticationTemplateTest-s Make sure to set densityDpi from the DisplayMatrics for the current Context when creating Bitmpas, to prevent them from using the default device's density which may be different than the app's density. Bug: 198742691 Test: atest CtsLegacyNotification30TestCases Change-Id: I26e462b541cbd829454cf710e36bb60e7a5e64fa