The only known use case for contentTypePredicate is to catch
the case when a paywall web page is returned via a DataSource,
rather than the data that was being requested. These days streaming
providers should be using HTTPS, where this problem does not exist.
Devices have also gotten a lot better at showing their own
notifications when paywalls are detected, which largely mitigates
the need for the app to show a more optimal error message or
redirect the user to a browser.
It therefore makes sense to deprioritize this feature. In
particular by removing the arg from constructors, where nearly
all applications are probably passing null.
PiperOrigin-RevId: 249634594
