[Graphbolt][Dataset] IGB-HOM dataset wrong number of edges

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## Description
The num edges in paper is 3995777033 in paper but the actual number of edges I download is 3727095830.

The shape should be (3727095830, 2), which does not match 3995777033 reported in paper.
This is the link to the paper: https://arxiv.org/pdf/2302.13522

Below is the download command:
wget https://igb-public-awsopen.s3.amazonaws.com/IGBH/processed/paper__cites__paper/edge_index.npy

This is the IGB-HOM info table:

## Depending work items or issues