Added initial segment overlap resolution logic

internal/builtin/merge.go

@@ -26,21 +26,7 @@ func (placeholderMerger) Merge(ctx context.Context, in []model.CanonicalTranscri
 	}
 
 	sort.SliceStable(segments, func(i, j int) bool {
-		left := segments[i]
-		right := segments[j]
-		if left.Start != right.Start {
-			return left.Start < right.Start
-		}
-		if left.End != right.End {
-			return left.End < right.End
-		}
-		if left.Source != right.Source {
-			return left.Source < right.Source
-		}
-		if left.SourceSegmentIndex != right.SourceSegmentIndex {
-			return left.SourceSegmentIndex < right.SourceSegmentIndex
-		}
-		return left.Speaker < right.Speaker
+		return model.SegmentLess(segments[i], segments[j])
 	})
 
 	return model.MergedTranscript{