Update Identify() method of drivers using a "DRIVER_NAME:" strategy to take into account poOpenInfo->papszAllowedDrivers

[rouault]

A number of drivers may (or require) a "DRIVER_NAME:" prefix to help them identify a dataset. They could also take into account when poOpenInfo->papszAllowedDrivers has a single value which is the driver being tested. Cf https://github.com/OSGeo/gdal/pull/9970#issuecomment-2122571722