chore: Chrome Web Storeインストール実験のロールアウト率を10%から45%に増加

Author: Ryosuke-Asano

experiments/experiments.json

@@ -4,7 +4,7 @@
             "id": "chrome_web_store_install",
             "salt": "chrome_web_store_install_v1_2025",
             "description": "Enable installation of Chrome Web Store extensions",
-            "rollout": 10,
+            "rollout": 45,
             "start": "2025-01-01",
             "end": "2026-12-31",
             "variants": [