Adding a special error message for non Safari browsers on iOS < 14.3

front/src/Stores/Errors/WebviewOnOldIOS.ts

@@ -0,0 +1,8 @@
+export class WebviewOnOldIOS extends Error {
+    static NAME = 'WebviewOnOldIOS';
+
+    constructor() {
+        super('Your iOS version cannot use video/audio in the browser unless you are using Safari. Please switch to Safari or upgrade iOS to 14.3 or above.');
+        this.name = WebviewOnOldIOS.NAME;
+    }
+}