MultiResolutionImageReader: Unhide constructor with usage

As with the regular ImageReader, allow selecting the consumer
usage flags for the Reader.

Test: New tests pass
Flag: com.android.internal.camera.flags.multiresolution_imagereader_usage_public
Bug: 338621560
Change-Id: Id4a6188f2ef7c684e6b4201d76b161f20226bc6e