Apply workaround to fix app launching on Linux

Manual backport of https://github.com/element-hq/element-desktop/pull/2307

src/electron-main.ts

@@ -326,6 +326,11 @@ app.commandLine.appendSwitch("--enable-usermedia-screen-capturing");
 if (!app.commandLine.hasSwitch("enable-features")) {
     app.commandLine.appendSwitch("enable-features", "WebRTCPipeWireCapturer");
 }
+// Workaround bug in electron 36:https://github.com/electron/electron/issues/46538
+// Hopefully this will no longer be needed soon and can be removed
+if (process.platform === "linux") {
+    app.commandLine.appendSwitch("gtk-version", "3");
+}
 
 const gotLock = app.requestSingleInstanceLock();
 if (!gotLock) {