[AI Assistance] Use prettier name for IsolatedWorld

This user visible so use the name of the product

Bug: none
Change-Id: Ia1b441f1929d2a477e7a1c8cd03375f261f7b431
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6277284
Reviewed-by: Ergün Erdoğmuş <[email protected]>
Commit-Queue: Nikolay Vitkov <[email protected]>

Author: Lightning00Blade

front_end/panels/ai_assistance/ExtensionScope.ts

@@ -9,7 +9,7 @@ import * as UI from '../../ui/legacy/legacy.js';
 
 import {AI_ASSISTANCE_CSS_CLASS_NAME, type ChangeManager} from './ChangeManager.js';
 
-export const FREESTYLER_WORLD_NAME = 'devtools_freestyler';
+export const FREESTYLER_WORLD_NAME = 'DevTools AI Assistance';
 export const FREESTYLER_BINDING_NAME = '__freestyler';
 
 /**