Ensure custom exposure mode is supported

package/ios/Core/CameraSession+Video.swift

@@ -18,7 +18,7 @@ extension CameraSession {
                       filePath: String,
                       onVideoRecorded: @escaping (_ video: Video) -> Void,
                       onError: @escaping (_ error: CameraError) -> Void) {
-    
+
     lockCurrentExposure(for: captureSession)
     // Run on Camera Queue
     CameraQueues.cameraQueue.async {
@@ -36,7 +36,7 @@ extension CameraSession {
       }
 
       let enableAudio = self.configuration?.audio != .disabled
-      
+
       // Callback for when new chunks are ready
       let onChunkReady: (ChunkedRecorder.Chunk) -> Void = { chunk in
         guard let delegate = self.delegate else {
@@ -193,13 +193,18 @@ extension CameraSession {
       }
     }
   }
-  
+
   func lockCurrentExposure(for session: AVCaptureSession) {
       guard let captureDevice = AVCaptureDevice.default(for: .video) else {
           print("No capture device available")
           return
       }
 
+      guard captureDevice.isExposureModeSupported(.custom) else {
+        ReactLogger.log(level: .info, message: "Custom exposure mode not supported")
+        return
+      }
+
       do {
           // Lock the device for configuration
           try captureDevice.lockForConfiguration()