Remove AddType warning for cleanup (#86029)

Removes the warning emitted when using Add-Type and the cleanup of temp
files fails due to a file still being in use. The cleanup should be
handled by AnsibleModule on exit giving it more time to wait for any
open file handles to close. The exception is still present if calling
`Add-CSharpType` without an `AnsibleModule` object.

changelogs/fragments/add-type-warning.yml

@@ -0,0 +1,5 @@
+bugfixes:
+  - >-
+    Windows - ignore temporary file cleanup warning when using AnsibleModule to
+    compile C# utils. This should reduce the number of warnings that can safely
+    be ignored when running PowerShell modules - https://github.com/ansible/ansible/issues/85976

lib/ansible/module_utils/powershell/Ansible.ModuleUtils.AddType.psm1

@@ -278,10 +278,16 @@ Function Add-CSharpType {
         if ($PSCmdlet.ParameterSetName -eq "Module") {
             $temp_path = $AnsibleModule.Tmpdir
             $include_debug = $AnsibleModule.Verbosity -ge 3
+
+            # AnsibleModule will handle the cleanup after module execution
+            # which should be enough time for AVs or other processes to release
+            # any locks on the temp files.
+            $tmpdir_clean_is_error = $false
         }
         else {
             $temp_path = [System.IO.Path]::GetTempPath()
             $include_debug = $IncludeDebugInfo.IsPresent
+            $tmpdir_clean_is_error = $true
         }
         $temp_path = Join-Path -Path $temp_path -ChildPath ([Guid]::NewGuid().Guid)
 
@@ -388,17 +394,13 @@ Function Add-CSharpType {
             }
             finally {
                 # Try to delete the temp path, if this fails and we are running
-                # with a module object write a warning instead of failing.
+                # with a module object, ignore and let it cleanup later.
                 try {
                     [System.IO.Directory]::Delete($temp_path, $true)
                 }
                 catch {
-                    $msg = "Failed to cleanup temporary directory '$temp_path' used for compiling C# code."
-                    if ($AnsibleModule) {
-                        $AnsibleModule.Warn("$msg Files may still be present after the task is complete. Error: $_")
-                    }
-                    else {
-                        throw "$msg Error: $_"
+                    if ($tmpdir_clean_is_error) {
+                        throw "Failed to cleanup temporary directory '$temp_path' used for compiling C# code. Error: $_"
                     }
                 }
             }