Try to fix again Mermaid Diagram error: Maximum call stack size exceeded.

Thanks to xet7 !

Fixes #4251

packages/markdown/src/template-integration.js

@@ -39,7 +39,18 @@ var emoji = require('markdown-it-emoji');
 var mathjax = require('markdown-it-mathjax3');
 Markdown.use(emoji);
 Markdown.use(mathjax);
-Markdown.use(markdownItMermaid);
+
+// Try to fix Mermaid Diagram error: Maximum call stack size exceeded.
+// Added bigger text size for Diagram.
+// https://github.com/wekan/wekan/issues/4251
+// https://stackoverflow.com/questions/66825888/maximum-text-size-in-diagram-exceeded-mermaid-js
+// https://github.com/mermaid-js/mermaid/blob/74b1219d62dd76d98d60abeeb36d4520f64faceb/src/defaultConfig.js#L39
+// https://github.com/wekan/cli-table3
+// https://www.npmjs.com/package/@wekanteam/markdown-it-mermaid
+// https://github.com/wekan/markdown-it-mermaid
+Markdown.use(markdownItMermaid,{
+  maxTextSize: 50000,
+});
 
 if (Package.ui) {
   const Template = Package.templating.Template;