Correct error in Configuration.updateFrom

When updating the non direction members of screenLayout
we check that they are not in total undefined, before
accepting the new value in full. This was enough for LONG/SIZE
which are always undefined or set together. It seems we have paths
now where SCREENLAYOUT_ROUND however can be undefined and the others
will be set. In this case if we pass a configuration with SCREENLAYOUT_ROUND_UNDEFINED
but LONG/SIZE set to updateFrom then we will overwrite our previous SCREENLAYOUT_ROUND value.
This triggers extra configuration changes.

Bug: 33098677
Test: bit FrameworksCoreTests:android.content.res.ConfigurationTest
Change-Id: I6eb321d27011a2af2134d0ed5b6864d4cd902dc3