feat: disable letter cache (#446)

Fixes #445

lib/l10n/app_en.arb

@@ -67,7 +67,6 @@
   "decode": "Decode",
   "decompress": "Decompress",
   "delete": "Delete",
-  "deleteScripts": "Delete server scripts at the same time",
   "deleteServers": "Batch delete servers",
   "deviceName": "Device name",
   "dirEmpty": "Make sure the folder is empty.",
@@ -154,6 +153,8 @@
   "languageName": "English",
   "lastTry": "Last try",
   "launchPage": "Launch page",
+  "letterCache": "Letter caching",
+  "letterCacheTip": "Recommended to enable, but enabling it prevents the input of CJK (Chinese, Japanese, Korean) characters",
   "license": "License",
   "light": "Light",
   "loadingFiles": "Loading files...",