fix(nodes): add missing framerate field in nvcodec test

The force_cpu_encoder_rejected test was constructing
NvAv1EncoderConfig with all fields explicitly but missed the
new framerate field added in the review-fix round.

Signed-off-by: StreamKit Devin <devin@streamkit.dev>
Co-Authored-By: Claudio Costa <cstcld91@gmail.com>

Author: streamkit-devin

crates/nodes/src/video/nv_av1.rs

@@ -818,6 +818,7 @@ mod tests {
             hw_accel: HwAccelMode::ForceCpu,
             cuda_device: None,
             bitrate: 2_000_000,
+            framerate: 30,
             keyframe_interval: None,
         });
         assert!(result.is_err(), "ForceCpu should be rejected by NV encoder");