CamelConversion: fix to not convert string values (#30595)

(cherry picked from commit 1ea0293878)

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

@@ -30,8 +30,6 @@ Function Convert-ListToSnakeCase($list) {
             $new_value = Convert-DictToSnakeCase -dict $value
         } elseif ($value -is [Array]) {
             $new_value = Convert-ListToSnakeCase -list $value
-        } elseif ($value -is [String]) {
-            $new_value = Convert-StringToSnakeCase -string $value
         } else {
             $new_value = $value
         }
@@ -55,8 +53,6 @@ Function Convert-DictToSnakeCase($dict) {
             $snake_dict.$snake_key = Convert-DictToSnakeCase -dict $value          
         } elseif ($value -is [Array]) {
             $snake_dict.$snake_key = Convert-ListToSnakeCase -list $value
-        } elseif ($value -is [String]) {
-            $snake_dict.$snake_key = Convert-StringToSnakeCase -string $value
         } else {
             $snake_dict.$snake_key = $value
         }

test/integration/targets/win_module_utils/library/camel_conversion_test.ps1

@@ -51,7 +51,8 @@ foreach ($entry in $output_dict.GetEnumerator()) {
                     Assert-Equals -actual $inner_list_hash.Name -expected $inner_list_hash.Value
                 }
             } elseif ($inner_list -is [String]) {
-                Assert-Equals -actual $inner_list -expected "string_two"
+                # this is not a string key so we need to keep it the same
+                Assert-Equals -actual $inner_list -expected "stringTwo"
             } else {
                 Assert-Equals -actual $inner_list -expected 0
             }