Incorrect recommendation to use Task.RunSynchronously in synchronous wait

[KalleOlaviNiemitalo]

https://learn.microsoft.com/en-us/entra/msal/dotnet/how-to/synchronous-programming#calling-asynchronous-methods-from-synchronous-code suggests using the Task.RunSynchronously() method on the Task returned by the ClientApplicationBase.RemoveAsync(IAccount) method if the Task has not completed yet:

microsoft-authentication-library-dotnet/msal-dotnet-articles/how-to/synchronous-programming.md

Lines 32 to 41 in 6d02517

	[Task.RunSynchronously](/dotnet/api/system.threading.tasks.task.runsynchronously)
	```csharp
	var getAcctsTasks = PCA.RemoveAsync(acct);
	// there is no timeout for RunSynchronously
	if (!getAcctsTasks.IsCompleted)
	{
	getAcctsTasks.RunSynchronously();
	}
	```

However, because ClientApplicationBase.RemoveAsync(IAccount) returns the Task created by an async method, the Task.RunSynchronously() method will throw:

System.InvalidOperationException: RunSynchronously may not be called on a task not bound to a delegate, such as the task returned from an asynchronous method.

Task.RunSynchronously is meant for a task that has been created but has not been started yet. It is not the correct method to use on a task that is expected to be running already.