This has been documented to work since this class was created, but until
now we were always trying to resolve using the current application's
`Resources.getIdentifier` method. This commit changes to resolve to the
other app's `Resources` object if the package name doesn't match the
current package.
This will only work if the current app has package-visibility to the
destination package: http://g.co/dev/packagevisibility
This is hard to test because to do so robustly requires being able to
guaranteed that another test APK will be installed with a known raw
resource inside it.
PiperOrigin-RevId: 577864992
88f554c74b