Send zero speakerHeight when someone is presenting

Co-authored-by: trevor-signal <trevor@signal.org>

ts/components/CallingPipRemoteVideo.dom.tsx

@@ -167,7 +167,11 @@ export function CallingPipRemoteVideo({
         }
         return nonRenderedRemoteParticipant(participant);
       });
-      setGroupCallVideoRequest(participants, newHeight);
+      setGroupCallVideoRequest(
+        participants,
+        // When there's a presenter, we do not want the SFU to prioritize the speaker feed
+        activeGroupCallSpeaker.presenting ? 0 : newHeight
+      );
     } else {
       setGroupCallVideoRequest(
         activeCall.remoteParticipants.map(nonRenderedRemoteParticipant),

ts/components/GroupCallRemoteParticipants.dom.tsx

@@ -220,6 +220,10 @@ export function GroupCallRemoteParticipants({
     prioritySortedParticipants,
   ]);
 
+  const isSomeonePresenting =
+    prioritySortedParticipants.length &&
+    prioritySortedParticipants[0].presenting;
+
   // Make sure we're not on a page that no longer exists (e.g. if people left the call)
   if (
     pageIndex >= gridParticipantsByPage.length &&
@@ -457,7 +461,10 @@ export function GroupCallRemoteParticipants({
     }
     setGroupCallVideoRequest(
       videoRequest,
-      clamp(gridParticipantHeight, 0, MAX_FRAME_HEIGHT)
+      // When there's a presenter, we do not want the SFU to prioritize the speaker
+      isSomeonePresenting
+        ? 0
+        : clamp(gridParticipantHeight, 0, MAX_FRAME_HEIGHT)
     );
   }, [
     devicePixelRatio,
@@ -469,6 +476,7 @@ export function GroupCallRemoteParticipants({
     setGroupCallVideoRequest,
     videoRequestMode,
     participantsOnOtherPages,
+    isSomeonePresenting,
   ]);
 
   return (