Fix Get-Error to work with strict mode (PowerShell#18895)

Author: SteveL-MSFT

src/System.Management.Automation/FormatAndOutput/DefaultFormatters/PowerShellCore_format_ps1xml.cs

@@ -1016,10 +1016,11 @@ private static IEnumerable<FormatViewDefinition> ViewsOf_System_Management_Autom
                 CustomControl.Create(outOfBand: true)
                     .StartEntry()
                         .AddScriptBlockExpressionBinding(@"
+                                    $errorColor = ''
+                                    $commandPrefix = ''
                                     if (@('NativeCommandErrorMessage','NativeCommandError') -notcontains $_.FullyQualifiedErrorId -and @('CategoryView','ConciseView','DetailedView') -notcontains $ErrorView)
                                     {
                                         $myinv = $_.InvocationInfo
-                                        $errorColor = ''
                                         if ($Host.UI.SupportsVirtualTerminal) {
                                             $errorColor = $PSStyle.Formatting.Error
                                         }
@@ -1070,10 +1071,7 @@ private static IEnumerable<FormatViewDefinition> ViewsOf_System_Management_Autom
                                         }
                                     }
 
-                                    if ($commandPrefix)
-                                    {
-                                        $errorColor + $commandPrefix
-                                    }
+                                    $errorColor + $commandPrefix
                                 ")
                         .AddScriptBlockExpressionBinding(@"
                                     Set-StrictMode -Off

test/powershell/Modules/Microsoft.PowerShell.Utility/Get-Error.Tests.ps1

@@ -145,4 +145,9 @@ Describe 'Get-Error tests' -Tag CI {
             }
         }
     }
+
+    It 'Get-Error works with strict mode' {
+        $out = pwsh -noprofile -command 'Set-StrictMode -Version Latest; $PSStyle.OutputRendering = "PlainText"; 1/0; Get-Error' | Out-String
+        $out | Should -Match "Message : Attempted to divide by zero."
+    }
 }