Fix setting properties of undefined error in background.

Author: mikekanter

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@api.stream/studio-kit",
-  "version": "3.0.43",
+  "version": "3.0.44",
   "description": "Client SDK for building studio experiences with API.stream",
   "license": "MIT",
   "private": false,

src/core/transforms/Background.tsx

@@ -110,12 +110,14 @@ export const Background = {
           if (videoRef.current) {
             videoRef.current!.src = src
             videoRef.current!.play().catch(() => {
-              videoRef.current.muted = true
-              videoRef.current.play()
+              if (videoRef.current) {
+                videoRef.current.muted = true
+                videoRef.current.play()
+              }
             })
             if (hasPermission(role, Permission.UpdateProject)) {
               interval = setInterval(() => {
-                if (videoRef.current.duration) {
+                if (videoRef.current?.duration) {
                   const timePending =
                     videoRef.current.duration - videoRef.current.currentTime
                   trigger('VideoTimeUpdate', {