sp_HumanEventsBlockViewer: duplicate column name breaks powershell automation

[DForck42]

Version of the script
3.9, 20240915

What is the current behavior?
the first result set has the duplicate column name blocked_process_report, causing powershell to error out

If the current behavior is a bug, please provide the steps to reproduce.
run this powershell:

   $BlockQuery = "
    DECLARE @startdate datetime = getdate()-1

    EXEC dbo.sp_HumanEventsBlockViewer @session_name = N'Blocked_Process_Report',
                                    @start_date = @startdate,
                                    @end_date = NULL;"

    $BlockQuery

    $Results = Invoke-SQLCmd -ServerInstance servername -Database master -Query $BlockQuery -as Dataset

What is the expected behavior?
being able to run powershell and get the results as a data set without the error

Which versions of SQL Server and which OS are affected by this issue? Did this work in previous versions of our procedures?
sql server 2019, windows server 2019. my team thinks this has been broken since about April 2024 for us

IMPORTANT: If you're going to contribute code, please read the contributing guide first.
https://github.com/erikdarlingdata/DarlingData/blob/main/CONTRIBUTING.md

[erikdarlingdata]

@DForck42 I don't use PowerShell at all, so this issue would be on you to fix.

[DForck42]

ok i did the thing, hopefully correct this second time around - #509