Reload configuration in RandomProbabilisticSampler only when T is changed

Currently, configuration [is](https://source.dot.net/#Microsoft.Extensions.Telemetry/Sampling/RandomProbabilisticSampler.cs,365c43912fa08496,references) reloaded when any change in `IConfiguration` occurs due to [poor](https://github.com/dotnet/runtime/issues/109445) design of `IOptionsMonitor`. Please optimize the code in RandomProbabilisticSampler so that it reloads configuration only when the actual type `T` changes or logger filter configuration is updated. This is necessary to limit the number of memory allocations for new arrays whenever configurations changes.