fixed issue on space in solution name

.github/workflows/arm-ttk-validations.yaml

@@ -42,19 +42,17 @@ jobs:
               $hasCreateUiDefinitionTemplateChanged = $true
             }
             
-            $filePaths = $filteredFiles -split ' '
-            if ($null -ne $filePaths[0])
+            if ($filteredFiles.Count -eq 1)
             {
-              $solutionNameWithOtherPath = $filePaths[0].SubString(10)
-              if ($solutionNameWithOtherPath -ne '' -and $solutionNameWithOtherPath -ne $null)
+              $packageIndex = $filteredFiles.IndexOf("/Package")
+              $sName = $filteredFiles.SubString(10, $packageIndex - 10)
+            }
+            else
             {
-                $headers = $solutionNameWithOtherPath -split '/', 3
-                if ($null -ne $headers[0])
-                {
-                  $sName = $headers[0]
-                }
-              }
+              $packageIndex = $filteredFiles[0].IndexOf("/Package")
+              $sName = $filteredFiles[0].SubString(10, $packageIndex - 10)
             }
+            Write-Host "SolutionName: $sName"
           }
 
           Write-Output "::set-output name=solutionName::$sName"