refactor: rename for intent (L3)

PostChangeResult is PostSaveFollowUp (the after-save pipeline, not a
result); DiviChange::changed() is record() (moved nodes are recorded but
not touched). cleanValue/withoutControls were renamed in wave 2.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01At3V6SjwbMe6eMzVGW3Hs7

src/Integrations/Divi/Pages/DiviUpdateAbility.php

@@ -146,7 +146,7 @@ final class DiviUpdateAbility extends DiviWriteAbility
         foreach ($updates as [$block, $attrs]) {
             // Composer::update() output: every client value already passed the choke point.
             $block->setAttrs($attrs);
-            $change->changed($block, 'updated');
+            $change->record($block, 'updated');
         }
 
         return $change;