fix: resolve OutputPath to absolute for Export-Parquet .NET cmdlet compatibility

Author: Zach Olinske

src/templates/finops-hub/test/Generate-MultiCloudTestData.ps1

@@ -2074,6 +2074,11 @@ Write-Host "  Output Path: $OutputPath"
 if ($PSBoundParameters.ContainsKey('Seed')) { Write-Host "  Random Seed: $Seed" }
 Write-Host ""
 
+# Resolve OutputPath to absolute — Export-Parquet (a .NET cmdlet) uses
+# [IO.Directory]::GetCurrentDirectory() which may differ from PowerShell's $PWD.
+# Converting to absolute here avoids "Could not find a part of the path" errors.
+$OutputPath = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($OutputPath)
+
 # Create output directory
 if (-not (Test-Path $OutputPath))
 {
@@ -2889,4 +2894,4 @@ else
     Write-Host "  3. Start ADF triggers to process the data"
 }
 
-Write-Host ""
+Write-Host ""