Get-PSUJobPipelineOutput returns no data for completed jobs (2026.3.x regression)

Environment: PowerShell Universal 2026.3.1 (possibly already 2026.3.0)

Summary: After upgrading to 2026.3.x, `Get-PSUJobPipelineOutput` returns nothing for completed jobs, even though the pipeline output was produced correctly and is counted (but not shown) in the Admin Console.

Repro script:
$InformationPreference = 'Continue'

$obj1 = [PSCustomObject]@{ Fruit = 'Apple'; Count = 3 }
Write-Information "Object 1: $($obj1 | ConvertTo-Json -Compress)"
$obj1

$obj2 = [PSCustomObject]@{ Name = 'Widget'; Color = 'Blue'; 'Order-State' = 'Success' }
Write-Information "Object 2: $($obj2 | ConvertTo-Json -Compress)"
$obj2

$arr = 1..2 | ForEach-Object { [PSCustomObject]@{ Index = $_; Value = "Item$_" } }
Write-Information "Object 3 (array): $($arr | ConvertTo-Json -Compress)"
$arr

Steps: Run via Invoke-PSUScript (or admin console), wait for completion, then check the job's "Pipeline Output" tab and call Get-PSUJobPipelineOutput -JobId <id> (tested locally and remotely with -ComputerName/-UseDefaultCredentials).

Expected: 4 objects (array unrolls to 2) with their properties, retrievable via Get-PSUJobPipelineOutput and inspectable in the Admin Console (as in 2026.1.6).

Actual:
- Admin Console "Pipeline Output" tab lists 4 rows but only shows the type name Deserialized.System.Management.Automation.PSCustomObject, no property values.
- Get-PSUJobPipelineOutput -JobId <id> returns nothing, locally and remotely.
- The job Log tab (explicit `Write-Information` JSON) confirms the correct values were actually emitted, ruling out a scripting error.

Impact: Any dashboard app using Get-PSUJobPipelineOutput to show job results in a table silently displays empty data despite successful job execution.