encoderd: fix premature rotation issue on camera realignment

[deanlee]

This PR fixes premature encoder rotation after camera realignment.

When a camera realignment occurs, the frame ID jumps ahead (e.g., from frame ID 100 to 106). The original rotation logic, relying on continuous frame IDs, caused early rotations. This could lead to crashes or memory exhaustion in loggerd due to a sync bug if realignment happens frequently.

The updated logic ensures correct rotation after the specified number of frames per segment (FRAMES_PER_SEGMENT), even with frame ID jumps. This change improves the robustness and stability of the encoder, preventing premature rotations and mitigating crash and memory issues.

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[adeebshihadeh]

We need a good test before we can merge anything like this.

[gregjhogan]

I think this causes camera frames between camera files to be out of alignment for every segment after a frame drop? That is really annoying when trying to play video files in sync, and it causes any segments after a frame drop to not be eligible for training. It seems concerning this didn't cause any tests to fail considering it used to rotate using the logic in this PR and we changed it intentionally.

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