fix: no video if camera is disabled on init and then enabled (#1981)

### 💡 Overview

The videorenderer latest refactor introduced a bug. If remote video was
disabled initially and then joined. The video was not received. We sent
the dimensions to the SFU only after the published tracks bool came
true. But SFU doesnt set the video stream after that. It expects the
dimensions to be known before this.

The SFU contract for sending updateSubscriptions is 

* send dimensions whenever it changes if view is visible
* send undefined dimensions if view is invisible
* send dimensions again whenever subscriber or publisher reconnects

This change ensures that the contract is satisfied now. It fixes the
issue.

Ticket: https://linear.app/stream/issue/RN-298/

Author: santhoshvai

packages/react-native-sdk/src/components/Participant/ParticipantView/VideoRenderer/TrackSubscriber.tsx

@@ -83,18 +83,17 @@ const TrackSubscriber = forwardRef<TrackSubscriberHandle, TrackSubscriberProps>(
         dimensions$,
         isPublishingTrack$,
         isJoinedState$,
+        // eslint-disable-next-line @typescript-eslint/no-unused-vars
       ]).subscribe(([dimension, isPublishing, isJoined]) => {
-        if (isJoined && isPublishing && !isVisible) {
-          // the participant is publishing and we are not visible, so we unsubscribe from the video track
-          requestTrackWithDimensions(DebounceType.FAST, undefined);
-        } else if (isJoined && isPublishing && isVisible && dimension) {
-          // the participant is publishing and we are visible and have valid dimensions, so we subscribe to the video track
-          requestTrackWithDimensions(DebounceType.IMMEDIATE, dimension);
-        } else if (isJoined && !isPublishing) {
-          // the participant stopped publishing a track, so we unsubscribe from the video track
-          requestTrackWithDimensions(DebounceType.FAST, undefined);
+        // isPublishing is not used here, but we need to keep it for the subscription
+        // to send the dimensions again when the participant starts publishing the track again
+        if (isJoined) {
+          if (!isVisible) {
+            requestTrackWithDimensions(DebounceType.MEDIUM, undefined);
+          } else if (dimension) {
+            requestTrackWithDimensions(DebounceType.IMMEDIATE, dimension);
+          }
         }
-        // if isPublishing but no dimension yet, we wait for dimensions
       });
 
       return () => {