fixed context menu long press open

static/record.js

@@ -11,6 +11,13 @@ window.addEventListener("load", async (event) => {
     await navigator.mediaDevices.getUserMedia({ audio: true });
 });
 
+document.getElementById('recordbuttonimage').oncontextmenu = function(event) {
+    event.preventDefault();
+    event.stopPropagation(); // not necessary in my case, could leave in case stopImmediateProp isn't available? 
+    event.stopImmediatePropagation();
+    return false;
+};
+
 function startButtonPulse(analyser) {
     const button = document.querySelector('#recordbutton');