improve i18n description

Author: nazabucciarelli

apps/meteor/server/settings/message.ts

@@ -168,6 +168,7 @@ export const createMessageSettings = () =>
 		await this.add('Message_MaxAllowedSize', 5000, {
 			type: 'int',
 			public: true,
+			// i18nDescription references MESSAGE_PARSE_HARD_LIMIT (20000) — update both if the constant changes
 			i18nDescription: 'Message_MaxAllowedSize_Description',
 		});
 		await this.add('Message_AllowConvertLongMessagesToAttachment', true, {

packages/i18n/src/locales/en.i18n.json

@@ -3517,7 +3517,7 @@
   "Message_KeepHistory": "Keep Per Message Editing History",
   "Message_MaxAll": "Maximum Channel Size for ALL Message",
   "Message_MaxAllowedSize": "Maximum Allowed Characters Per Message",
-  "Message_MaxAllowedSize_Description": "Maximum number of characters allowed per message. Messages exceeding this limit will be displayed as plain text without markdown parsing.",
+  "Message_MaxAllowedSize_Description": "Maximum number of characters allowed per message. Messages exceeding this limit will be displayed as plain text without markdown parsing. Note: markdown rendering is always disabled above 20,000 characters, regardless of this setting.",
   "Message_not_sent_try_again": "Message not sent. \nPlease try again",
   "Message_QuoteChainLimit": "Maximum Number of Chained Quotes",
   "Message_Read_Receipt_Enabled": "Show Read Receipts",