fix: SSR時のmetaをエスケープするように (#13440)

* fix: SSR時のmetaをエスケープするように

* エスケープ方法を変更

packages/backend/package.json

@@ -118,6 +118,7 @@
 		"got": "14.1.0",
 		"happy-dom": "10.0.3",
 		"hpagent": "1.2.0",
+		"htmlescape": "^1.1.1",
 		"http-link-header": "1.1.1",
 		"ioredis": "5.3.2",
 		"ip-cidr": "3.1.0",
@@ -194,6 +195,7 @@
 		"@types/color-convert": "2.0.3",
 		"@types/content-disposition": "0.5.8",
 		"@types/fluent-ffmpeg": "2.1.24",
+		"@types/htmlescape": "^1.1.3",
 		"@types/http-link-header": "1.0.5",
 		"@types/jest": "29.5.11",
 		"@types/js-yaml": "4.0.9",