cancel the pending enforce on unload

main.js

@@ -17,6 +17,9 @@ module.exports = class RibbonClasp extends Plugin {
 
   onunload() {
     this.observer?.disconnect();
+    // disconnect doesn't stop an already-scheduled call
+    this.debouncedEnforce?.cancel();
+
     const ribbon = this.getRibbon();
     if (ribbon && this.originalOnChange) {
       ribbon.onChange = this.originalOnChange;