Fix for issue #3428, load the configured diagrams even when initialize has not been called.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "mermaid",
-  "version": "9.1.6",
+  "version": "9.1.7",
   "description": "Markdownish syntax for generating flowcharts, sequence diagrams, class diagrams, gantt charts and git graphs.",
   "main": "dist/mermaid.min.js",
   "module": "dist/mermaid.esm.min.mjs",
@@ -122,4 +122,4 @@
     "**/*.css",
     "**/*.scss"
   ]
-}
+}

src/mermaidAPI.js

@@ -146,6 +146,10 @@ export const decodeEntities = function (text) {
  * @returns {any}
  */
 const render = function (id, _txt, cb, container) {
+  if (!hasLoadedDiagrams) {
+    addDiagrams();
+    hasLoadedDiagrams = true;
+  }
   configApi.reset();
   let txt = _txt.replace(/\r\n?/g, '\n'); // parser problems on CRLF ignore all CR and leave LF;;
   const graphInit = utils.detectInit(txt);