fix(pizzax): nullの設定値がデフォルトに置き換えられてしまう問題を修正

packages/frontend/package.json

@@ -44,7 +44,6 @@
 		"compare-versions": "6.1.0",
 		"cropperjs": "2.0.0-beta.4",
 		"date-fns": "2.30.0",
-		"defu": "^6.1.4",
 		"escape-regexp": "0.0.1",
 		"estree-walker": "3.0.3",
 		"eventemitter3": "5.0.1",
@@ -52,6 +51,7 @@
 		"insert-text-at-cursor": "0.3.0",
 		"is-file-animated": "1.0.2",
 		"json5": "2.2.3",
+		"lodash.defaultsdeep": "4.6.1",
 		"matter-js": "0.19.0",
 		"mfm-js": "0.24.0",
 		"misskey-bubble-game": "workspace:*",
@@ -101,6 +101,7 @@
 		"@testing-library/vue": "8.0.1",
 		"@types/escape-regexp": "0.0.3",
 		"@types/estree": "1.0.5",
+		"@types/lodash.defaultsdeep": "4.6.9",
 		"@types/matter-js": "0.19.6",
 		"@types/micromatch": "4.0.6",
 		"@types/node": "20.11.5",